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Польза проекта № 2

Отправлять письма напрямуюОт умных контрактов

Автоматизируйте уведомления пользователей с интеграцией смарт‑контрактов. Отправляйте подтверждения транзакций, уведомления о наградах и сообщения по управлению без любой серверной инфраструктуры.

📜

Нулевой бекенд, максимальная автоматизация

5 000
Потери по газу
<3с
Время доставки
6
Блокчейны
∞
масштаб
YourContract.sol
function claimRewards() external {
    uint256 rewards = calculateRewards(msg.sender);
    _transfer(rewardToken, msg.sender, rewards);

    // Approve USDC for email fee
    usdc.approve(address(mailer), mailer.getFee());

    // Send email notification using prepared template
    mailer.sendPrepared(
        msg.sender,
        "reward-notification",  // template ID
        false,                  // standard mode: 10% fee only
        true                    // resolve sender name
    );
}

Три мощных типа интеграции

Автоматизируйте критические пользовательские сообщения напрямую из ваших смарт‑контрактов

Уведомления о транзакциях

Уведомления в реальном времениУлучшенный пользовательский опытСокращено количество тикетов поддержки

Автоматически уведомлять пользователей об успешных транзакциях, неудачных попытках и ожидающих подтверждениях.

Распространённые варианты применения:

  • DeFi swap confirmations with slippage details
  • NFT purchase receipts with marketplace links
  • Уведомления о заявленных наградах за стейкинг
  • Уведомления о неудачных транзакциях с оценкой газа
  • Обновления о завершении межцепочечного моста
Пример реализации
<!doctype html>
<html lang="en">
  <head>
    <script type="module">import { injectIntoGlobalHook } from "/@react-refresh";
injectIntoGlobalHook(window);
window.$RefreshReg$ = () => {};
window.$RefreshSig$ = () => (type) => type;</script>

    <script type="module" src="/@vite/client"></script>

    <meta charset="UTF-8" />
    <!-- Safari JSON-LD error handler - suppress non-critical structured data errors -->
    <script>
      window.onerror = function (m) {
        if (m && m.indexOf && m.indexOf('@context') !== -1) return true;
        return false;
      };
    </script>

    <!-- Favicon and Icons -->
    <link rel="icon" type="image/png" href="/favicon.ico" />
    <link rel="apple-touch-icon" href="/favicon-192.png" />
    <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16.png" />
    <link rel="icon" type="image/png" sizes="32x32" href="/favicon.ico" />
    <link rel="icon" type="image/png" sizes="192x192" href="/favicon-192.png" />
    <link rel="icon" type="image/png" sizes="512x512" href="/favicon-512.png" />

    <!-- Viewport and Basic Meta -->
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="theme-color" content="#3b82f6" />

    <!-- Security Headers -->
    <meta http-equiv="X-Content-Type-Options" content="nosniff" />
    <meta http-equiv="X-XSS-Protection" content="1; mode=block" />
    <meta http-equiv="Referrer-Policy" content="strict-origin-when-cross-origin" />
    <meta
      http-equiv="Permissions-Policy"
      content="camera=(), microphone=(), geolocation=(), interest-cohort=()"
    />

    <!-- Primary Meta Tags -->
    <title>Signic - Web3 Email Platform | Wallet-Based Email</title>
    <meta name="title" content="Signic - Web3 Email Platform | Wallet-Based Email" />
    <meta
      name="description"
      content="Free Web3 email platform connecting crypto wallets to email addresses. No passwords needed - your wallet is your identity. Use ENS (.eth) and SNS (.sol) domains as email, with multi-chain support for Ethereum, Solana, and Polygon."
    />
    <meta
      name="keywords"
      content="Web3 email, blockchain email, wallet email, ENS email, SNS email, decentralized email, crypto email, passwordless email, ethereum email, solana email, DAO governance email"
    />
    <meta name="author" content="Sudobility Inc" />
    <meta
      name="robots"
      content="index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1"
    />

    <!-- Canonical URL - dynamically set by SEOHead.tsx based on current route -->

    <!-- Open Graph / Facebook -->
    <meta property="og:type" content="website" />
    <meta
      property="og:title"
      content="Signic - Web3 Email Platform | Wallet-Based Email"
    />
    <meta
      property="og:description"
      content="Free Web3 email platform connecting crypto wallets to email addresses. No passwords needed - your wallet is your identity. Use ENS and SNS domains as email."
    />
    <meta property="og:image" content="https://signic.email/logo.png" />
    <meta property="og:site_name" content="Signic" />
    <meta property="og:locale" content="en_US" />

    <!-- Twitter -->
    <meta property="twitter:card" content="summary_large_image" />
    <meta property="twitter:url" content="https://signic.email" />
    <meta
      property="twitter:title"
      content="Signic - Web3 Email Platform | Wallet-Based Email"
    />
    <meta
      property="twitter:description"
      content="Free Web3 email platform with wallet-based authentication. Use ENS and SNS domains as email, with DAO governance tools."
    />
    <meta property="twitter:image" content="https://signic.email/logo.png" />
    <meta property="twitter:creator" content="@signicemail" />
    <meta property="twitter:site" content="@signicemail" />

    <!-- Application Meta -->
    <meta name="application-name" content="Signic" />
    <meta name="msapplication-TileColor" content="#3b82f6" />
    <meta name="referrer" content="origin-when-cross-origin" />
    <meta name="format-detection" content="telephone=no" />
    <meta name="mobile-web-app-capable" content="yes" />
    <meta name="apple-mobile-web-app-capable" content="yes" />
    <meta name="apple-mobile-web-app-status-bar-style" content="default" />
    <meta name="apple-mobile-web-app-title" content="Signic" />
    <meta name="copyright" content="Sudobility Inc. All rights reserved." />

    <!-- PWA -->
    <link rel="manifest" href="/manifest.json" />

    <!-- DNS Prefetch and Preconnect -->
    <link rel="dns-prefetch" href="//fonts.googleapis.com" />
    <link rel="dns-prefetch" href="//fonts.gstatic.com" />
    <link rel="dns-prefetch" href="//api.signic.email" />
    <link rel="dns-prefetch" href="//signic.email" />
    <link rel="dns-prefetch" href="//walletconnect.com" />
    <link rel="dns-prefetch" href="//phantom.app" />
    <link rel="dns-prefetch" href="//metamask.io" />

    <!-- Preconnect for critical third-party domains -->
    <link rel="preconnect" href="https://api.signic.email" crossorigin />
    <link rel="preconnect" href="https://fonts.googleapis.com" crossorigin />
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />

    <!-- Preconnect to Firebase (for analytics and performance) -->
    <link rel="preconnect" href="https://firebaseinstallations.googleapis.com" crossorigin />
    <link rel="preconnect" href="https://www.google-analytics.com" crossorigin />

    <!-- Preconnect to RPC providers (only establish connection, don't load) -->
    <link rel="preconnect" href="https://eth-mainnet.g.alchemy.com" crossorigin />
    <link rel="preconnect" href="https://solana-mainnet.g.alchemy.com" crossorigin />

    <!-- Above-the-fold CSS inline for fastest render -->
    <style>
      /* Critical CSS for initial paint - Optimized for LCP */
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }

      body {
        margin: 0;
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        background: #fff;
        color: #111827;
        line-height: 1.5;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
      }

      /* Critical above-the-fold hero styles for immediate paint */
      .hero-gradient {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        min-height: 80vh;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
      }

      .hero-content {
        max-width: 1200px;
        padding: 2rem;
        text-align: center;
      }

      h1 {
        font-size: clamp(2rem, 5vw, 3.5rem);
        font-weight: 700;
        line-height: 1.2;
        margin-bottom: 1rem;
      }

      .loading {
        display: flex;
        align-items: center;
        justify-content: center;
        min-height: 100vh;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      }

      .spinner {
        width: 40px;
        height: 40px;
        border: 4px solid rgba(255, 255, 255, 0.3);
        border-top: 4px solid white;
        border-radius: 50%;
        animation: spin 1s linear infinite;
      }

      @keyframes spin {
        0% {
          transform: rotate(0deg);
        }
        100% {
          transform: rotate(360deg);
        }
      }

      #root {
        min-height: 100vh;
      }

      /* Prevent layout shift */
      img {
        max-width: 100%;
        height: auto;
        display: block;
      }
    </style>

    <!-- Web3 provider optimization - DNS prefetch only (loaded lazily) -->
    <link rel="dns-prefetch" href="//ethereum-api.xyz" />
    <link rel="dns-prefetch" href="//polygon-rpc.com" />
    <link rel="dns-prefetch" href="//solana-api.mainnet-beta.solana.com" />
    <link rel="dns-prefetch" href="//rpc.ankr.com" />

    <!-- Wallet provider DNS prefetch - connections established on demand -->
    <link rel="dns-prefetch" href="//walletconnect.org" />
    <link rel="dns-prefetch" href="//safe-transaction.mainnet.gnosis.io" />

    <!-- CDN optimizations -->
    <link rel="dns-prefetch" href="//cdn.jsdelivr.net" />
    <link rel="dns-prefetch" href="//unpkg.com" />

    <!-- Service worker registration hint -->
    <link rel="prefetch" href="/sw.js" />

    <!-- Font loading - deferred for LCP -->
    <link rel="preconnect" href="https://fonts.googleapis.com" />
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
    <link
      href="https://fonts.googleapis.com/css2?family=Dancing+Script:wght@400;500;600;700&display=swap"
      rel="stylesheet"
      media="print"
      onload="this.media = 'all'"
    />
    <noscript>
      <link
        href="https://fonts.googleapis.com/css2?family=Dancing+Script:wght@400;500;600;700&display=swap"
        rel="stylesheet"
      />
    </noscript>

    <!-- Structured Data -->
    <script type="application/ld+json">
      [
        {
          "@context": "https://schema.org",
          "@type": "WebApplication",
          "name": "Signic",
          "alternateName": ["signic.email", "Web3 Email Platform"],
          "description": "Free Web3 email platform connecting crypto wallets to email addresses. No passwords needed - your wallet is your identity. Use ENS (.eth) and SNS (.sol) domains as email with multi-chain support.",
          "url": "https://signic.email",
          "applicationCategory": ["BusinessApplication", "CommunicationApplication"],
          "operatingSystem": "Web Browser",
          "browserRequirements": "HTML5, JavaScript enabled, Web3 wallet (MetaMask, Phantom, WalletConnect)",
          "softwareRequirements": "Web3 wallet extension or mobile app",
          "datePublished": "2024-01-01",
          "dateModified": "2026-07-11",
          "isAccessibleForFree": true,
          "featureList": [
            "Wallet-based authentication - no passwords required",
            "ENS domain email support (.eth domains)",
            "Solana Name Service email support (.sol domains)",
            "Multi-chain support (Ethereum, Solana, Polygon, Arbitrum, Optimism)",
            "Smart contract email notifications",
            "DAO governance email tools",
            "Email delegation for teams and DAOs",
            "Web2/Web3 bridge communication"
          ],
          "offers": [
            {
              "@type": "Offer",
              "name": "Free Web3 Email",
              "price": "0",
              "priceCurrency": "USD",
              "description": "Free wallet-based email address"
            },
            {
              "@type": "Offer",
              "name": "Premium ENS/SNS Email",
              "price": "2",
              "priceCurrency": "USD",
              "description": "Use your ENS or SNS domain as email address"
            }
          ],
          "author": {
            "@type": "Organization",
            "name": "Signic",
            "url": "https://signic.email"
          },
          "installUrl": "https://signic.email/connect",
          "screenshot": "https://signic.email/logo.png"
        },
        {
          "@context": "https://schema.org",
          "@type": "Organization",
          "@id": "https://signic.email/#organization",
          "name": "Signic",
          "url": "https://signic.email",
          "logo": "https://signic.email/logo.png",
          "description": "Web3 email platform connecting blockchain wallets to email addresses with multi-chain support.",
          "foundingDate": "2024-01-01",
          "contactPoint": {
            "@type": "ContactPoint",
            "contactType": "customer service",
            "email": "[email protected]",
            "availableLanguage": "English"
          },
          "sameAs": ["https://twitter.com/signicemail", "", "https://discord.gg/upkNXbksVF"]
        },
        {
          "@context": "https://schema.org",
          "@type": "WebSite",
          "@id": "https://signic.email/#website",
          "name": "Signic",
          "url": "https://signic.email",
          "potentialAction": {
            "@type": "SearchAction",
            "target": "https://signic.email/search?q={search_term_string}",
            "query-input": "required name=search_term_string"
          },
          "publisher": {
            "@id": "https://signic.email/#organization"
          }
        },
        {
          "@context": "https://schema.org",
          "@type": "HowTo",
          "name": "How to Set Up Web3 Email with Crypto Wallet",
          "description": "Step-by-step guide to connect your crypto wallet and start using Web3 email with ENS domains",
          "image": "https://signic.email/logo.png",
          "totalTime": "PT5M",
          "estimatedCost": {
            "@type": "MonetaryAmount",
            "currency": "USD",
            "value": "0"
          },
          "supply": [
            {
              "@type": "HowToSupply",
              "name": "Web3 Wallet (MetaMask, Phantom, etc.)"
            },
            {
              "@type": "HowToSupply",
              "name": "ENS domain (optional but recommended)"
            }
          ],
          "tool": [
            {
              "@type": "HowToTool",
              "name": "Web browser with wallet extension"
            }
          ],
          "step": [
            {
              "@type": "HowToStep",
              "name": "Connect Your Wallet",
              "text": "Visit signic.email and click 'Connect Wallet'. Select your preferred wallet (MetaMask, Phantom, Coinbase, etc.) and approve the connection."
            },
            {
              "@type": "HowToStep",
              "name": "Verify Your Identity",
              "text": "Sign a verification message with your wallet to prove ownership. This creates your Web3 email account linked to your wallet address."
            },
            {
              "@type": "HowToStep",
              "name": "Configure Email Address",
              "text": "If you own an ENS domain (.eth) or SNS domain (.sol), it automatically becomes your email address. Otherwise, use your wallet address or create a custom alias."
            },
            {
              "@type": "HowToStep",
              "name": "Start Using Web3 Email",
              "text": "Access your inbox, compose messages, and enjoy passwordless email. Set up smart contract notifications and DAO governance alerts as needed."
            }
          ]
        }
      ]
    </script>
  </head>
  <body>
    <div id="root"></div>
    <script type="module" src="/src/main.tsx?t=1783798028296"></script>
  </body>
</html>

DeFi Protocol Events

Предотвратить ликвидациюУвеличить TVL протоколаЛучшее удержание пользователей

Держите пользователей в курсе вознаграждений за фарминг, рисков ликвидации и изменений протокола.

Распространённые варианты применения:

  • Выплаты вознаграждений за yield farming
  • Предупреждения о ликвидации при коэффициенте обеспечения 110%
  • Запускается новый пул с бонусной доходностью (APY).
  • Напоминания о голосовании по предложениям управления
  • Изменения и обновления платы за протокол
Пример реализации
<!doctype html>
<html lang="en">
  <head>
    <script type="module">import { injectIntoGlobalHook } from "/@react-refresh";
injectIntoGlobalHook(window);
window.$RefreshReg$ = () => {};
window.$RefreshSig$ = () => (type) => type;</script>

    <script type="module" src="/@vite/client"></script>

    <meta charset="UTF-8" />
    <!-- Safari JSON-LD error handler - suppress non-critical structured data errors -->
    <script>
      window.onerror = function (m) {
        if (m && m.indexOf && m.indexOf('@context') !== -1) return true;
        return false;
      };
    </script>

    <!-- Favicon and Icons -->
    <link rel="icon" type="image/png" href="/favicon.ico" />
    <link rel="apple-touch-icon" href="/favicon-192.png" />
    <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16.png" />
    <link rel="icon" type="image/png" sizes="32x32" href="/favicon.ico" />
    <link rel="icon" type="image/png" sizes="192x192" href="/favicon-192.png" />
    <link rel="icon" type="image/png" sizes="512x512" href="/favicon-512.png" />

    <!-- Viewport and Basic Meta -->
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="theme-color" content="#3b82f6" />

    <!-- Security Headers -->
    <meta http-equiv="X-Content-Type-Options" content="nosniff" />
    <meta http-equiv="X-XSS-Protection" content="1; mode=block" />
    <meta http-equiv="Referrer-Policy" content="strict-origin-when-cross-origin" />
    <meta
      http-equiv="Permissions-Policy"
      content="camera=(), microphone=(), geolocation=(), interest-cohort=()"
    />

    <!-- Primary Meta Tags -->
    <title>Signic - Web3 Email Platform | Wallet-Based Email</title>
    <meta name="title" content="Signic - Web3 Email Platform | Wallet-Based Email" />
    <meta
      name="description"
      content="Free Web3 email platform connecting crypto wallets to email addresses. No passwords needed - your wallet is your identity. Use ENS (.eth) and SNS (.sol) domains as email, with multi-chain support for Ethereum, Solana, and Polygon."
    />
    <meta
      name="keywords"
      content="Web3 email, blockchain email, wallet email, ENS email, SNS email, decentralized email, crypto email, passwordless email, ethereum email, solana email, DAO governance email"
    />
    <meta name="author" content="Sudobility Inc" />
    <meta
      name="robots"
      content="index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1"
    />

    <!-- Canonical URL - dynamically set by SEOHead.tsx based on current route -->

    <!-- Open Graph / Facebook -->
    <meta property="og:type" content="website" />
    <meta
      property="og:title"
      content="Signic - Web3 Email Platform | Wallet-Based Email"
    />
    <meta
      property="og:description"
      content="Free Web3 email platform connecting crypto wallets to email addresses. No passwords needed - your wallet is your identity. Use ENS and SNS domains as email."
    />
    <meta property="og:image" content="https://signic.email/logo.png" />
    <meta property="og:site_name" content="Signic" />
    <meta property="og:locale" content="en_US" />

    <!-- Twitter -->
    <meta property="twitter:card" content="summary_large_image" />
    <meta property="twitter:url" content="https://signic.email" />
    <meta
      property="twitter:title"
      content="Signic - Web3 Email Platform | Wallet-Based Email"
    />
    <meta
      property="twitter:description"
      content="Free Web3 email platform with wallet-based authentication. Use ENS and SNS domains as email, with DAO governance tools."
    />
    <meta property="twitter:image" content="https://signic.email/logo.png" />
    <meta property="twitter:creator" content="@signicemail" />
    <meta property="twitter:site" content="@signicemail" />

    <!-- Application Meta -->
    <meta name="application-name" content="Signic" />
    <meta name="msapplication-TileColor" content="#3b82f6" />
    <meta name="referrer" content="origin-when-cross-origin" />
    <meta name="format-detection" content="telephone=no" />
    <meta name="mobile-web-app-capable" content="yes" />
    <meta name="apple-mobile-web-app-capable" content="yes" />
    <meta name="apple-mobile-web-app-status-bar-style" content="default" />
    <meta name="apple-mobile-web-app-title" content="Signic" />
    <meta name="copyright" content="Sudobility Inc. All rights reserved." />

    <!-- PWA -->
    <link rel="manifest" href="/manifest.json" />

    <!-- DNS Prefetch and Preconnect -->
    <link rel="dns-prefetch" href="//fonts.googleapis.com" />
    <link rel="dns-prefetch" href="//fonts.gstatic.com" />
    <link rel="dns-prefetch" href="//api.signic.email" />
    <link rel="dns-prefetch" href="//signic.email" />
    <link rel="dns-prefetch" href="//walletconnect.com" />
    <link rel="dns-prefetch" href="//phantom.app" />
    <link rel="dns-prefetch" href="//metamask.io" />

    <!-- Preconnect for critical third-party domains -->
    <link rel="preconnect" href="https://api.signic.email" crossorigin />
    <link rel="preconnect" href="https://fonts.googleapis.com" crossorigin />
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />

    <!-- Preconnect to Firebase (for analytics and performance) -->
    <link rel="preconnect" href="https://firebaseinstallations.googleapis.com" crossorigin />
    <link rel="preconnect" href="https://www.google-analytics.com" crossorigin />

    <!-- Preconnect to RPC providers (only establish connection, don't load) -->
    <link rel="preconnect" href="https://eth-mainnet.g.alchemy.com" crossorigin />
    <link rel="preconnect" href="https://solana-mainnet.g.alchemy.com" crossorigin />

    <!-- Above-the-fold CSS inline for fastest render -->
    <style>
      /* Critical CSS for initial paint - Optimized for LCP */
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }

      body {
        margin: 0;
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        background: #fff;
        color: #111827;
        line-height: 1.5;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
      }

      /* Critical above-the-fold hero styles for immediate paint */
      .hero-gradient {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        min-height: 80vh;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
      }

      .hero-content {
        max-width: 1200px;
        padding: 2rem;
        text-align: center;
      }

      h1 {
        font-size: clamp(2rem, 5vw, 3.5rem);
        font-weight: 700;
        line-height: 1.2;
        margin-bottom: 1rem;
      }

      .loading {
        display: flex;
        align-items: center;
        justify-content: center;
        min-height: 100vh;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      }

      .spinner {
        width: 40px;
        height: 40px;
        border: 4px solid rgba(255, 255, 255, 0.3);
        border-top: 4px solid white;
        border-radius: 50%;
        animation: spin 1s linear infinite;
      }

      @keyframes spin {
        0% {
          transform: rotate(0deg);
        }
        100% {
          transform: rotate(360deg);
        }
      }

      #root {
        min-height: 100vh;
      }

      /* Prevent layout shift */
      img {
        max-width: 100%;
        height: auto;
        display: block;
      }
    </style>

    <!-- Web3 provider optimization - DNS prefetch only (loaded lazily) -->
    <link rel="dns-prefetch" href="//ethereum-api.xyz" />
    <link rel="dns-prefetch" href="//polygon-rpc.com" />
    <link rel="dns-prefetch" href="//solana-api.mainnet-beta.solana.com" />
    <link rel="dns-prefetch" href="//rpc.ankr.com" />

    <!-- Wallet provider DNS prefetch - connections established on demand -->
    <link rel="dns-prefetch" href="//walletconnect.org" />
    <link rel="dns-prefetch" href="//safe-transaction.mainnet.gnosis.io" />

    <!-- CDN optimizations -->
    <link rel="dns-prefetch" href="//cdn.jsdelivr.net" />
    <link rel="dns-prefetch" href="//unpkg.com" />

    <!-- Service worker registration hint -->
    <link rel="prefetch" href="/sw.js" />

    <!-- Font loading - deferred for LCP -->
    <link rel="preconnect" href="https://fonts.googleapis.com" />
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
    <link
      href="https://fonts.googleapis.com/css2?family=Dancing+Script:wght@400;500;600;700&display=swap"
      rel="stylesheet"
      media="print"
      onload="this.media = 'all'"
    />
    <noscript>
      <link
        href="https://fonts.googleapis.com/css2?family=Dancing+Script:wght@400;500;600;700&display=swap"
        rel="stylesheet"
      />
    </noscript>

    <!-- Structured Data -->
    <script type="application/ld+json">
      [
        {
          "@context": "https://schema.org",
          "@type": "WebApplication",
          "name": "Signic",
          "alternateName": ["signic.email", "Web3 Email Platform"],
          "description": "Free Web3 email platform connecting crypto wallets to email addresses. No passwords needed - your wallet is your identity. Use ENS (.eth) and SNS (.sol) domains as email with multi-chain support.",
          "url": "https://signic.email",
          "applicationCategory": ["BusinessApplication", "CommunicationApplication"],
          "operatingSystem": "Web Browser",
          "browserRequirements": "HTML5, JavaScript enabled, Web3 wallet (MetaMask, Phantom, WalletConnect)",
          "softwareRequirements": "Web3 wallet extension or mobile app",
          "datePublished": "2024-01-01",
          "dateModified": "2026-07-11",
          "isAccessibleForFree": true,
          "featureList": [
            "Wallet-based authentication - no passwords required",
            "ENS domain email support (.eth domains)",
            "Solana Name Service email support (.sol domains)",
            "Multi-chain support (Ethereum, Solana, Polygon, Arbitrum, Optimism)",
            "Smart contract email notifications",
            "DAO governance email tools",
            "Email delegation for teams and DAOs",
            "Web2/Web3 bridge communication"
          ],
          "offers": [
            {
              "@type": "Offer",
              "name": "Free Web3 Email",
              "price": "0",
              "priceCurrency": "USD",
              "description": "Free wallet-based email address"
            },
            {
              "@type": "Offer",
              "name": "Premium ENS/SNS Email",
              "price": "2",
              "priceCurrency": "USD",
              "description": "Use your ENS or SNS domain as email address"
            }
          ],
          "author": {
            "@type": "Organization",
            "name": "Signic",
            "url": "https://signic.email"
          },
          "installUrl": "https://signic.email/connect",
          "screenshot": "https://signic.email/logo.png"
        },
        {
          "@context": "https://schema.org",
          "@type": "Organization",
          "@id": "https://signic.email/#organization",
          "name": "Signic",
          "url": "https://signic.email",
          "logo": "https://signic.email/logo.png",
          "description": "Web3 email platform connecting blockchain wallets to email addresses with multi-chain support.",
          "foundingDate": "2024-01-01",
          "contactPoint": {
            "@type": "ContactPoint",
            "contactType": "customer service",
            "email": "[email protected]",
            "availableLanguage": "English"
          },
          "sameAs": ["https://twitter.com/signicemail", "", "https://discord.gg/upkNXbksVF"]
        },
        {
          "@context": "https://schema.org",
          "@type": "WebSite",
          "@id": "https://signic.email/#website",
          "name": "Signic",
          "url": "https://signic.email",
          "potentialAction": {
            "@type": "SearchAction",
            "target": "https://signic.email/search?q={search_term_string}",
            "query-input": "required name=search_term_string"
          },
          "publisher": {
            "@id": "https://signic.email/#organization"
          }
        },
        {
          "@context": "https://schema.org",
          "@type": "HowTo",
          "name": "How to Set Up Web3 Email with Crypto Wallet",
          "description": "Step-by-step guide to connect your crypto wallet and start using Web3 email with ENS domains",
          "image": "https://signic.email/logo.png",
          "totalTime": "PT5M",
          "estimatedCost": {
            "@type": "MonetaryAmount",
            "currency": "USD",
            "value": "0"
          },
          "supply": [
            {
              "@type": "HowToSupply",
              "name": "Web3 Wallet (MetaMask, Phantom, etc.)"
            },
            {
              "@type": "HowToSupply",
              "name": "ENS domain (optional but recommended)"
            }
          ],
          "tool": [
            {
              "@type": "HowToTool",
              "name": "Web browser with wallet extension"
            }
          ],
          "step": [
            {
              "@type": "HowToStep",
              "name": "Connect Your Wallet",
              "text": "Visit signic.email and click 'Connect Wallet'. Select your preferred wallet (MetaMask, Phantom, Coinbase, etc.) and approve the connection."
            },
            {
              "@type": "HowToStep",
              "name": "Verify Your Identity",
              "text": "Sign a verification message with your wallet to prove ownership. This creates your Web3 email account linked to your wallet address."
            },
            {
              "@type": "HowToStep",
              "name": "Configure Email Address",
              "text": "If you own an ENS domain (.eth) or SNS domain (.sol), it automatically becomes your email address. Otherwise, use your wallet address or create a custom alias."
            },
            {
              "@type": "HowToStep",
              "name": "Start Using Web3 Email",
              "text": "Access your inbox, compose messages, and enjoy passwordless email. Set up smart contract notifications and DAO governance alerts as needed."
            }
          ]
        }
      ]
    </script>
  </head>
  <body>
    <div id="root"></div>
    <script type="module" src="/src/main.tsx?t=1783798028296"></script>
  </body>
</html>

Governance & DAO

Повышение участия в голосованииПрозрачное управлениеАктивное сообщество

Automate governance communications and voting notifications for your DAO members.

Распространённые варианты применения:

  • Объявления о создании новых предложений
  • Напоминания о сроке голосования (за 24 ч, за 1 ч)
  • Подтверждения выполнения предложения
  • Уведомления об изменении делегирования
  • Обновления по достижению ключевых этапов Казначейства
Пример реализации
// Notify on new governance proposal
function createProposal(string calldata description) external {
    uint256 proposalId = proposals.length;
    
    // ... create proposal logic ...
    
    // Email all token holders
    IMailBox(mailboxContract).sendBulkEmail(
        getAllTokenHolders(),
        "🗳️ New Governance Proposal",
        "governance-proposal",
        abi.encode(proposalId, description, block.timestamp + votingDelay)
    );
}

Создано для производства

Функции уровня предприятия, масштабируемые вместе с вашим протоколом

Оптимизировано по газу

Минимальные расходы газа — обычно менее 5 000 газов за письмо

Оптимизированные вызовы контракта, которые не влияют на затраты вашей основной транзакции

Мгновенная доставка

Электронные письма отправляются в течение нескольких секунд после подтверждения транзакции.

Обработка в реальном времени со средним временем доставки менее 3 секунд

Шаблонная система

Шаблоны, готовые к использованию, для распространённых сценариев использования

Настраиваемые шаблоны HTML/текста с динамической подстановкой данных

Панель аналитики

Отслеживание доставки писем и метрик вовлечённости

Аналитика в реальном времени по открытию писем, кликам и конверсиям

Мультицепочная поддержка

Разверните на любой блокчейн — мы решаем все сложности

🔵

Ethereum

Live
Стоимость газа:~4,200 gas

Доступные сети:

Mainnet
🔵

Ethereum sepolia

Beta
Стоимость газа:~3,000 gas

Доступные сети:

Mainnet

Интеграция за три простых шага

Начните интеграцию электронной почты смарт‑контрактов за менее чем 10 минут

1

Установите SDK

~2 минуты

Добавьте MailBox в ваш проект смарт‑контрактов.

install-sdk.sh
npm install @sudobility/contracts
# or
yarn add @sudobility/contracts
# or
pnpm add @sudobility/contracts
два

Импорт интерфейса

~1 минута

Импортируйте интерфейс IMailBox в свой контракт.

импорт‑интерфейса.sol
<!doctype html>
<html lang="en">
  <head>
    <script type="module">import { injectIntoGlobalHook } from "/@react-refresh";
injectIntoGlobalHook(window);
window.$RefreshReg$ = () => {};
window.$RefreshSig$ = () => (type) => type;</script>

    <script type="module" src="/@vite/client"></script>

    <meta charset="UTF-8" />
    <!-- Safari JSON-LD error handler - suppress non-critical structured data errors -->
    <script>
      window.onerror = function (m) {
        if (m && m.indexOf && m.indexOf('@context') !== -1) return true;
        return false;
      };
    </script>

    <!-- Favicon and Icons -->
    <link rel="icon" type="image/png" href="/favicon.ico" />
    <link rel="apple-touch-icon" href="/favicon-192.png" />
    <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16.png" />
    <link rel="icon" type="image/png" sizes="32x32" href="/favicon.ico" />
    <link rel="icon" type="image/png" sizes="192x192" href="/favicon-192.png" />
    <link rel="icon" type="image/png" sizes="512x512" href="/favicon-512.png" />

    <!-- Viewport and Basic Meta -->
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="theme-color" content="#3b82f6" />

    <!-- Security Headers -->
    <meta http-equiv="X-Content-Type-Options" content="nosniff" />
    <meta http-equiv="X-XSS-Protection" content="1; mode=block" />
    <meta http-equiv="Referrer-Policy" content="strict-origin-when-cross-origin" />
    <meta
      http-equiv="Permissions-Policy"
      content="camera=(), microphone=(), geolocation=(), interest-cohort=()"
    />

    <!-- Primary Meta Tags -->
    <title>Signic - Web3 Email Platform | Wallet-Based Email</title>
    <meta name="title" content="Signic - Web3 Email Platform | Wallet-Based Email" />
    <meta
      name="description"
      content="Free Web3 email platform connecting crypto wallets to email addresses. No passwords needed - your wallet is your identity. Use ENS (.eth) and SNS (.sol) domains as email, with multi-chain support for Ethereum, Solana, and Polygon."
    />
    <meta
      name="keywords"
      content="Web3 email, blockchain email, wallet email, ENS email, SNS email, decentralized email, crypto email, passwordless email, ethereum email, solana email, DAO governance email"
    />
    <meta name="author" content="Sudobility Inc" />
    <meta
      name="robots"
      content="index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1"
    />

    <!-- Canonical URL - dynamically set by SEOHead.tsx based on current route -->

    <!-- Open Graph / Facebook -->
    <meta property="og:type" content="website" />
    <meta
      property="og:title"
      content="Signic - Web3 Email Platform | Wallet-Based Email"
    />
    <meta
      property="og:description"
      content="Free Web3 email platform connecting crypto wallets to email addresses. No passwords needed - your wallet is your identity. Use ENS and SNS domains as email."
    />
    <meta property="og:image" content="https://signic.email/logo.png" />
    <meta property="og:site_name" content="Signic" />
    <meta property="og:locale" content="en_US" />

    <!-- Twitter -->
    <meta property="twitter:card" content="summary_large_image" />
    <meta property="twitter:url" content="https://signic.email" />
    <meta
      property="twitter:title"
      content="Signic - Web3 Email Platform | Wallet-Based Email"
    />
    <meta
      property="twitter:description"
      content="Free Web3 email platform with wallet-based authentication. Use ENS and SNS domains as email, with DAO governance tools."
    />
    <meta property="twitter:image" content="https://signic.email/logo.png" />
    <meta property="twitter:creator" content="@signicemail" />
    <meta property="twitter:site" content="@signicemail" />

    <!-- Application Meta -->
    <meta name="application-name" content="Signic" />
    <meta name="msapplication-TileColor" content="#3b82f6" />
    <meta name="referrer" content="origin-when-cross-origin" />
    <meta name="format-detection" content="telephone=no" />
    <meta name="mobile-web-app-capable" content="yes" />
    <meta name="apple-mobile-web-app-capable" content="yes" />
    <meta name="apple-mobile-web-app-status-bar-style" content="default" />
    <meta name="apple-mobile-web-app-title" content="Signic" />
    <meta name="copyright" content="Sudobility Inc. All rights reserved." />

    <!-- PWA -->
    <link rel="manifest" href="/manifest.json" />

    <!-- DNS Prefetch and Preconnect -->
    <link rel="dns-prefetch" href="//fonts.googleapis.com" />
    <link rel="dns-prefetch" href="//fonts.gstatic.com" />
    <link rel="dns-prefetch" href="//api.signic.email" />
    <link rel="dns-prefetch" href="//signic.email" />
    <link rel="dns-prefetch" href="//walletconnect.com" />
    <link rel="dns-prefetch" href="//phantom.app" />
    <link rel="dns-prefetch" href="//metamask.io" />

    <!-- Preconnect for critical third-party domains -->
    <link rel="preconnect" href="https://api.signic.email" crossorigin />
    <link rel="preconnect" href="https://fonts.googleapis.com" crossorigin />
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />

    <!-- Preconnect to Firebase (for analytics and performance) -->
    <link rel="preconnect" href="https://firebaseinstallations.googleapis.com" crossorigin />
    <link rel="preconnect" href="https://www.google-analytics.com" crossorigin />

    <!-- Preconnect to RPC providers (only establish connection, don't load) -->
    <link rel="preconnect" href="https://eth-mainnet.g.alchemy.com" crossorigin />
    <link rel="preconnect" href="https://solana-mainnet.g.alchemy.com" crossorigin />

    <!-- Above-the-fold CSS inline for fastest render -->
    <style>
      /* Critical CSS for initial paint - Optimized for LCP */
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }

      body {
        margin: 0;
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        background: #fff;
        color: #111827;
        line-height: 1.5;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
      }

      /* Critical above-the-fold hero styles for immediate paint */
      .hero-gradient {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        min-height: 80vh;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
      }

      .hero-content {
        max-width: 1200px;
        padding: 2rem;
        text-align: center;
      }

      h1 {
        font-size: clamp(2rem, 5vw, 3.5rem);
        font-weight: 700;
        line-height: 1.2;
        margin-bottom: 1rem;
      }

      .loading {
        display: flex;
        align-items: center;
        justify-content: center;
        min-height: 100vh;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      }

      .spinner {
        width: 40px;
        height: 40px;
        border: 4px solid rgba(255, 255, 255, 0.3);
        border-top: 4px solid white;
        border-radius: 50%;
        animation: spin 1s linear infinite;
      }

      @keyframes spin {
        0% {
          transform: rotate(0deg);
        }
        100% {
          transform: rotate(360deg);
        }
      }

      #root {
        min-height: 100vh;
      }

      /* Prevent layout shift */
      img {
        max-width: 100%;
        height: auto;
        display: block;
      }
    </style>

    <!-- Web3 provider optimization - DNS prefetch only (loaded lazily) -->
    <link rel="dns-prefetch" href="//ethereum-api.xyz" />
    <link rel="dns-prefetch" href="//polygon-rpc.com" />
    <link rel="dns-prefetch" href="//solana-api.mainnet-beta.solana.com" />
    <link rel="dns-prefetch" href="//rpc.ankr.com" />

    <!-- Wallet provider DNS prefetch - connections established on demand -->
    <link rel="dns-prefetch" href="//walletconnect.org" />
    <link rel="dns-prefetch" href="//safe-transaction.mainnet.gnosis.io" />

    <!-- CDN optimizations -->
    <link rel="dns-prefetch" href="//cdn.jsdelivr.net" />
    <link rel="dns-prefetch" href="//unpkg.com" />

    <!-- Service worker registration hint -->
    <link rel="prefetch" href="/sw.js" />

    <!-- Font loading - deferred for LCP -->
    <link rel="preconnect" href="https://fonts.googleapis.com" />
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
    <link
      href="https://fonts.googleapis.com/css2?family=Dancing+Script:wght@400;500;600;700&display=swap"
      rel="stylesheet"
      media="print"
      onload="this.media = 'all'"
    />
    <noscript>
      <link
        href="https://fonts.googleapis.com/css2?family=Dancing+Script:wght@400;500;600;700&display=swap"
        rel="stylesheet"
      />
    </noscript>

    <!-- Structured Data -->
    <script type="application/ld+json">
      [
        {
          "@context": "https://schema.org",
          "@type": "WebApplication",
          "name": "Signic",
          "alternateName": ["signic.email", "Web3 Email Platform"],
          "description": "Free Web3 email platform connecting crypto wallets to email addresses. No passwords needed - your wallet is your identity. Use ENS (.eth) and SNS (.sol) domains as email with multi-chain support.",
          "url": "https://signic.email",
          "applicationCategory": ["BusinessApplication", "CommunicationApplication"],
          "operatingSystem": "Web Browser",
          "browserRequirements": "HTML5, JavaScript enabled, Web3 wallet (MetaMask, Phantom, WalletConnect)",
          "softwareRequirements": "Web3 wallet extension or mobile app",
          "datePublished": "2024-01-01",
          "dateModified": "2026-07-11",
          "isAccessibleForFree": true,
          "featureList": [
            "Wallet-based authentication - no passwords required",
            "ENS domain email support (.eth domains)",
            "Solana Name Service email support (.sol domains)",
            "Multi-chain support (Ethereum, Solana, Polygon, Arbitrum, Optimism)",
            "Smart contract email notifications",
            "DAO governance email tools",
            "Email delegation for teams and DAOs",
            "Web2/Web3 bridge communication"
          ],
          "offers": [
            {
              "@type": "Offer",
              "name": "Free Web3 Email",
              "price": "0",
              "priceCurrency": "USD",
              "description": "Free wallet-based email address"
            },
            {
              "@type": "Offer",
              "name": "Premium ENS/SNS Email",
              "price": "2",
              "priceCurrency": "USD",
              "description": "Use your ENS or SNS domain as email address"
            }
          ],
          "author": {
            "@type": "Organization",
            "name": "Signic",
            "url": "https://signic.email"
          },
          "installUrl": "https://signic.email/connect",
          "screenshot": "https://signic.email/logo.png"
        },
        {
          "@context": "https://schema.org",
          "@type": "Organization",
          "@id": "https://signic.email/#organization",
          "name": "Signic",
          "url": "https://signic.email",
          "logo": "https://signic.email/logo.png",
          "description": "Web3 email platform connecting blockchain wallets to email addresses with multi-chain support.",
          "foundingDate": "2024-01-01",
          "contactPoint": {
            "@type": "ContactPoint",
            "contactType": "customer service",
            "email": "[email protected]",
            "availableLanguage": "English"
          },
          "sameAs": ["https://twitter.com/signicemail", "", "https://discord.gg/upkNXbksVF"]
        },
        {
          "@context": "https://schema.org",
          "@type": "WebSite",
          "@id": "https://signic.email/#website",
          "name": "Signic",
          "url": "https://signic.email",
          "potentialAction": {
            "@type": "SearchAction",
            "target": "https://signic.email/search?q={search_term_string}",
            "query-input": "required name=search_term_string"
          },
          "publisher": {
            "@id": "https://signic.email/#organization"
          }
        },
        {
          "@context": "https://schema.org",
          "@type": "HowTo",
          "name": "How to Set Up Web3 Email with Crypto Wallet",
          "description": "Step-by-step guide to connect your crypto wallet and start using Web3 email with ENS domains",
          "image": "https://signic.email/logo.png",
          "totalTime": "PT5M",
          "estimatedCost": {
            "@type": "MonetaryAmount",
            "currency": "USD",
            "value": "0"
          },
          "supply": [
            {
              "@type": "HowToSupply",
              "name": "Web3 Wallet (MetaMask, Phantom, etc.)"
            },
            {
              "@type": "HowToSupply",
              "name": "ENS domain (optional but recommended)"
            }
          ],
          "tool": [
            {
              "@type": "HowToTool",
              "name": "Web browser with wallet extension"
            }
          ],
          "step": [
            {
              "@type": "HowToStep",
              "name": "Connect Your Wallet",
              "text": "Visit signic.email and click 'Connect Wallet'. Select your preferred wallet (MetaMask, Phantom, Coinbase, etc.) and approve the connection."
            },
            {
              "@type": "HowToStep",
              "name": "Verify Your Identity",
              "text": "Sign a verification message with your wallet to prove ownership. This creates your Web3 email account linked to your wallet address."
            },
            {
              "@type": "HowToStep",
              "name": "Configure Email Address",
              "text": "If you own an ENS domain (.eth) or SNS domain (.sol), it automatically becomes your email address. Otherwise, use your wallet address or create a custom alias."
            },
            {
              "@type": "HowToStep",
              "name": "Start Using Web3 Email",
              "text": "Access your inbox, compose messages, and enjoy passwordless email. Set up smart contract notifications and DAO governance alerts as needed."
            }
          ]
        }
      ]
    </script>
  </head>
  <body>
    <div id="root"></div>
    <script type="module" src="/src/main.tsx?t=1783798028296"></script>
  </body>
</html>
три

Отправить письма

~5 минут

Вызовите функцию sendEmail из логики вашего контракта.

отправка‑электронных‑писем.sol
<!doctype html>
<html lang="en">
  <head>
    <script type="module">import { injectIntoGlobalHook } from "/@react-refresh";
injectIntoGlobalHook(window);
window.$RefreshReg$ = () => {};
window.$RefreshSig$ = () => (type) => type;</script>

    <script type="module" src="/@vite/client"></script>

    <meta charset="UTF-8" />
    <!-- Safari JSON-LD error handler - suppress non-critical structured data errors -->
    <script>
      window.onerror = function (m) {
        if (m && m.indexOf && m.indexOf('@context') !== -1) return true;
        return false;
      };
    </script>

    <!-- Favicon and Icons -->
    <link rel="icon" type="image/png" href="/favicon.ico" />
    <link rel="apple-touch-icon" href="/favicon-192.png" />
    <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16.png" />
    <link rel="icon" type="image/png" sizes="32x32" href="/favicon.ico" />
    <link rel="icon" type="image/png" sizes="192x192" href="/favicon-192.png" />
    <link rel="icon" type="image/png" sizes="512x512" href="/favicon-512.png" />

    <!-- Viewport and Basic Meta -->
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="theme-color" content="#3b82f6" />

    <!-- Security Headers -->
    <meta http-equiv="X-Content-Type-Options" content="nosniff" />
    <meta http-equiv="X-XSS-Protection" content="1; mode=block" />
    <meta http-equiv="Referrer-Policy" content="strict-origin-when-cross-origin" />
    <meta
      http-equiv="Permissions-Policy"
      content="camera=(), microphone=(), geolocation=(), interest-cohort=()"
    />

    <!-- Primary Meta Tags -->
    <title>Signic - Web3 Email Platform | Wallet-Based Email</title>
    <meta name="title" content="Signic - Web3 Email Platform | Wallet-Based Email" />
    <meta
      name="description"
      content="Free Web3 email platform connecting crypto wallets to email addresses. No passwords needed - your wallet is your identity. Use ENS (.eth) and SNS (.sol) domains as email, with multi-chain support for Ethereum, Solana, and Polygon."
    />
    <meta
      name="keywords"
      content="Web3 email, blockchain email, wallet email, ENS email, SNS email, decentralized email, crypto email, passwordless email, ethereum email, solana email, DAO governance email"
    />
    <meta name="author" content="Sudobility Inc" />
    <meta
      name="robots"
      content="index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1"
    />

    <!-- Canonical URL - dynamically set by SEOHead.tsx based on current route -->

    <!-- Open Graph / Facebook -->
    <meta property="og:type" content="website" />
    <meta
      property="og:title"
      content="Signic - Web3 Email Platform | Wallet-Based Email"
    />
    <meta
      property="og:description"
      content="Free Web3 email platform connecting crypto wallets to email addresses. No passwords needed - your wallet is your identity. Use ENS and SNS domains as email."
    />
    <meta property="og:image" content="https://signic.email/logo.png" />
    <meta property="og:site_name" content="Signic" />
    <meta property="og:locale" content="en_US" />

    <!-- Twitter -->
    <meta property="twitter:card" content="summary_large_image" />
    <meta property="twitter:url" content="https://signic.email" />
    <meta
      property="twitter:title"
      content="Signic - Web3 Email Platform | Wallet-Based Email"
    />
    <meta
      property="twitter:description"
      content="Free Web3 email platform with wallet-based authentication. Use ENS and SNS domains as email, with DAO governance tools."
    />
    <meta property="twitter:image" content="https://signic.email/logo.png" />
    <meta property="twitter:creator" content="@signicemail" />
    <meta property="twitter:site" content="@signicemail" />

    <!-- Application Meta -->
    <meta name="application-name" content="Signic" />
    <meta name="msapplication-TileColor" content="#3b82f6" />
    <meta name="referrer" content="origin-when-cross-origin" />
    <meta name="format-detection" content="telephone=no" />
    <meta name="mobile-web-app-capable" content="yes" />
    <meta name="apple-mobile-web-app-capable" content="yes" />
    <meta name="apple-mobile-web-app-status-bar-style" content="default" />
    <meta name="apple-mobile-web-app-title" content="Signic" />
    <meta name="copyright" content="Sudobility Inc. All rights reserved." />

    <!-- PWA -->
    <link rel="manifest" href="/manifest.json" />

    <!-- DNS Prefetch and Preconnect -->
    <link rel="dns-prefetch" href="//fonts.googleapis.com" />
    <link rel="dns-prefetch" href="//fonts.gstatic.com" />
    <link rel="dns-prefetch" href="//api.signic.email" />
    <link rel="dns-prefetch" href="//signic.email" />
    <link rel="dns-prefetch" href="//walletconnect.com" />
    <link rel="dns-prefetch" href="//phantom.app" />
    <link rel="dns-prefetch" href="//metamask.io" />

    <!-- Preconnect for critical third-party domains -->
    <link rel="preconnect" href="https://api.signic.email" crossorigin />
    <link rel="preconnect" href="https://fonts.googleapis.com" crossorigin />
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />

    <!-- Preconnect to Firebase (for analytics and performance) -->
    <link rel="preconnect" href="https://firebaseinstallations.googleapis.com" crossorigin />
    <link rel="preconnect" href="https://www.google-analytics.com" crossorigin />

    <!-- Preconnect to RPC providers (only establish connection, don't load) -->
    <link rel="preconnect" href="https://eth-mainnet.g.alchemy.com" crossorigin />
    <link rel="preconnect" href="https://solana-mainnet.g.alchemy.com" crossorigin />

    <!-- Above-the-fold CSS inline for fastest render -->
    <style>
      /* Critical CSS for initial paint - Optimized for LCP */
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }

      body {
        margin: 0;
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        background: #fff;
        color: #111827;
        line-height: 1.5;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
      }

      /* Critical above-the-fold hero styles for immediate paint */
      .hero-gradient {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        min-height: 80vh;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
      }

      .hero-content {
        max-width: 1200px;
        padding: 2rem;
        text-align: center;
      }

      h1 {
        font-size: clamp(2rem, 5vw, 3.5rem);
        font-weight: 700;
        line-height: 1.2;
        margin-bottom: 1rem;
      }

      .loading {
        display: flex;
        align-items: center;
        justify-content: center;
        min-height: 100vh;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      }

      .spinner {
        width: 40px;
        height: 40px;
        border: 4px solid rgba(255, 255, 255, 0.3);
        border-top: 4px solid white;
        border-radius: 50%;
        animation: spin 1s linear infinite;
      }

      @keyframes spin {
        0% {
          transform: rotate(0deg);
        }
        100% {
          transform: rotate(360deg);
        }
      }

      #root {
        min-height: 100vh;
      }

      /* Prevent layout shift */
      img {
        max-width: 100%;
        height: auto;
        display: block;
      }
    </style>

    <!-- Web3 provider optimization - DNS prefetch only (loaded lazily) -->
    <link rel="dns-prefetch" href="//ethereum-api.xyz" />
    <link rel="dns-prefetch" href="//polygon-rpc.com" />
    <link rel="dns-prefetch" href="//solana-api.mainnet-beta.solana.com" />
    <link rel="dns-prefetch" href="//rpc.ankr.com" />

    <!-- Wallet provider DNS prefetch - connections established on demand -->
    <link rel="dns-prefetch" href="//walletconnect.org" />
    <link rel="dns-prefetch" href="//safe-transaction.mainnet.gnosis.io" />

    <!-- CDN optimizations -->
    <link rel="dns-prefetch" href="//cdn.jsdelivr.net" />
    <link rel="dns-prefetch" href="//unpkg.com" />

    <!-- Service worker registration hint -->
    <link rel="prefetch" href="/sw.js" />

    <!-- Font loading - deferred for LCP -->
    <link rel="preconnect" href="https://fonts.googleapis.com" />
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
    <link
      href="https://fonts.googleapis.com/css2?family=Dancing+Script:wght@400;500;600;700&display=swap"
      rel="stylesheet"
      media="print"
      onload="this.media = 'all'"
    />
    <noscript>
      <link
        href="https://fonts.googleapis.com/css2?family=Dancing+Script:wght@400;500;600;700&display=swap"
        rel="stylesheet"
      />
    </noscript>

    <!-- Structured Data -->
    <script type="application/ld+json">
      [
        {
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          "@type": "WebApplication",
          "name": "Signic",
          "alternateName": ["signic.email", "Web3 Email Platform"],
          "description": "Free Web3 email platform connecting crypto wallets to email addresses. No passwords needed - your wallet is your identity. Use ENS (.eth) and SNS (.sol) domains as email with multi-chain support.",
          "url": "https://signic.email",
          "applicationCategory": ["BusinessApplication", "CommunicationApplication"],
          "operatingSystem": "Web Browser",
          "browserRequirements": "HTML5, JavaScript enabled, Web3 wallet (MetaMask, Phantom, WalletConnect)",
          "softwareRequirements": "Web3 wallet extension or mobile app",
          "datePublished": "2024-01-01",
          "dateModified": "2026-07-11",
          "isAccessibleForFree": true,
          "featureList": [
            "Wallet-based authentication - no passwords required",
            "ENS domain email support (.eth domains)",
            "Solana Name Service email support (.sol domains)",
            "Multi-chain support (Ethereum, Solana, Polygon, Arbitrum, Optimism)",
            "Smart contract email notifications",
            "DAO governance email tools",
            "Email delegation for teams and DAOs",
            "Web2/Web3 bridge communication"
          ],
          "offers": [
            {
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              "name": "Free Web3 Email",
              "price": "0",
              "priceCurrency": "USD",
              "description": "Free wallet-based email address"
            },
            {
              "@type": "Offer",
              "name": "Premium ENS/SNS Email",
              "price": "2",
              "priceCurrency": "USD",
              "description": "Use your ENS or SNS domain as email address"
            }
          ],
          "author": {
            "@type": "Organization",
            "name": "Signic",
            "url": "https://signic.email"
          },
          "installUrl": "https://signic.email/connect",
          "screenshot": "https://signic.email/logo.png"
        },
        {
          "@context": "https://schema.org",
          "@type": "Organization",
          "@id": "https://signic.email/#organization",
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          "url": "https://signic.email",
          "logo": "https://signic.email/logo.png",
          "description": "Web3 email platform connecting blockchain wallets to email addresses with multi-chain support.",
          "foundingDate": "2024-01-01",
          "contactPoint": {
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            "contactType": "customer service",
            "email": "[email protected]",
            "availableLanguage": "English"
          },
          "sameAs": ["https://twitter.com/signicemail", "", "https://discord.gg/upkNXbksVF"]
        },
        {
          "@context": "https://schema.org",
          "@type": "WebSite",
          "@id": "https://signic.email/#website",
          "name": "Signic",
          "url": "https://signic.email",
          "potentialAction": {
            "@type": "SearchAction",
            "target": "https://signic.email/search?q={search_term_string}",
            "query-input": "required name=search_term_string"
          },
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          }
        },
        {
          "@context": "https://schema.org",
          "@type": "HowTo",
          "name": "How to Set Up Web3 Email with Crypto Wallet",
          "description": "Step-by-step guide to connect your crypto wallet and start using Web3 email with ENS domains",
          "image": "https://signic.email/logo.png",
          "totalTime": "PT5M",
          "estimatedCost": {
            "@type": "MonetaryAmount",
            "currency": "USD",
            "value": "0"
          },
          "supply": [
            {
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              "name": "Web3 Wallet (MetaMask, Phantom, etc.)"
            },
            {
              "@type": "HowToSupply",
              "name": "ENS domain (optional but recommended)"
            }
          ],
          "tool": [
            {
              "@type": "HowToTool",
              "name": "Web browser with wallet extension"
            }
          ],
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            {
              "@type": "HowToStep",
              "name": "Connect Your Wallet",
              "text": "Visit signic.email and click 'Connect Wallet'. Select your preferred wallet (MetaMask, Phantom, Coinbase, etc.) and approve the connection."
            },
            {
              "@type": "HowToStep",
              "name": "Verify Your Identity",
              "text": "Sign a verification message with your wallet to prove ownership. This creates your Web3 email account linked to your wallet address."
            },
            {
              "@type": "HowToStep",
              "name": "Configure Email Address",
              "text": "If you own an ENS domain (.eth) or SNS domain (.sol), it automatically becomes your email address. Otherwise, use your wallet address or create a custom alias."
            },
            {
              "@type": "HowToStep",
              "name": "Start Using Web3 Email",
              "text": "Access your inbox, compose messages, and enjoy passwordless email. Set up smart contract notifications and DAO governance alerts as needed."
            }
          ]
        }
      ]
    </script>
  </head>
  <body>
    <div id="root"></div>
    <script type="module" src="/src/main.tsx?t=1783798028296"></script>
  </body>
</html>

Расширенные функции

Мощные возможности для сложных сценариев использования

Условная логика

Отправлять письма на основе сложных условий в цепочке блоков

Пример:
Уведомлять пользователей только в случае, если размер их позиции превышает 1 000 долларов и коэффициент здоровья падает ниже 150 %.

Массовые операции

Отправить электронное письмо нескольким пользователям в одной транзакции

Пример:
Уведомить всех поставщиков LP, когда запускается новая программа стимулирования.

Переменные шаблона

Динамический контент на основе данных транзакций

Пример:
Включите суммы обмена, комиссии, скольжение и хэш транзакции в подтверждениях.

Логика повторных попыток

Автоматический повтор доставки неуспешных писем

Пример:
Повторить важные уведомления до 3 раз с экспоненциальным отложением.

Истории успеха

Как протоколы преобразовали пользовательский опыт с помощью электронных писем смарт-контрактов

DeFi Yield Protocol

Интеграция:

Автоматические уведомления о наградах + предупреждения об ликвидации

-67 %
liquidations
+145 %
user Retention
-80 %
support Tickets
"Электронные письма смарт-контрактов сократили наши события ликвидации на 67 %. Пользователи теперь получают своевременные предупреждения и могут действовать до того, как станет слишком поздно."
NFT Marketplace

Интеграция:

Уведомления о ставках + подтверждения продаж

+234 %
bid Activity
+156 %
sales Volume
+89 %
return Buyers
"Автоматические уведомления о ставках преобразили наш рынок. Продавцы реагируют быстрее, а покупатели остаются вовлечёнными на протяжении всех торгов."
Игровой протокол

Интеграция:

Разблокировка достижений + распределение наград

+178 %
daily Active
+267%
quest Completion
+145 %
token Earnings
"Игроки любят получать мгновенные уведомления, когда разблокируют достижения. Это геймификация на новом уровне."

Начните создавать письма для смарт‑контрактов

Присоединяйтесь к протоколам, автоматизирующим пользовательские коммуникации с интеграцией электронной почты смарт-контрактов. Сократите время разработки и улучшите пользовательский опыт.

🚀Performance Monitor

Web Vitals

LCPLargest Contentful Paint
2228ms
FIDFirst Input Delay
N/Ams
CLSCumulative Layout Shift
0.119
FCPFirst Contentful Paint
1576ms
TTFBTime to First Byte
13ms

Bundle Performance

JS Load
16424ms
CSS Load
263ms
JS Files
162
Transfer Size
22.7MB

Memory

Used Heap
73.1MB
Total Heap
82.4MB
Usage
2%
GoodNeeds ImprovementPoor