Builder First

    Email API for
    Builders

    The best API to send transactional emails. Optimized for speed, reliability, and builder experience. Stop worrying about spam folders.

    send-email.js
    // Using fetch API
    const sendEmail = async () => {
      const response = await fetch('https://tapi.simplysend.email/post', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          'X-Api-Key': 'your_api_key',
          'X-Id': 'your_account_id'
        },
        body: JSON.stringify({
          to: 'recipient@example.com',
          from: 'sender@yourdomain.com',
          subject: 'Hello from Simply Send',
          html: '<html><body><h1>Hello!</h1><p>Sent via API.</p><footer>{{report_abuse_email_html}}</footer></body></html>',
          text: 'Hello! This is a test email sent via the API.',
          replyTo: 'support@mydomain.com',
        })
      });
    
      const data = await response.json();
      console.log('Email sent:', data);
    };

    Built for scale

    Our infrastructure handles millions of emails per month. We've optimized every millisecond of the delivery pipeline.

    Global Edge Network

    Emails are routed through the nearest edge location for minimum latency.

    99.95% Uptime SLA

    Battle-tested infrastructure that scales with your business needs.

    Real-time Logs

    Track every event from 'sent' to 'opened' with <100ms latency.

    SMTP Relay

    Modern Infra,
    Zero Code Changes

    Not ready to migrate to a REST API? Our high-performance SMTP relay allows you to swap your existing provider in minutes. Just update your server address and you're live.

    • Compatible with all legacy systems
    • Secure TLS/SSL encryption on ports 587 & 465
    • Real-time visibility for SMTP traffic
    • Global edge routing for lowest latency
    smtp-relay.js
    const nodemailer = require('nodemailer');
    
    const transporter = nodemailer.createTransport({
      host: "smtp.simplysend.domain.com",
      port: 587,
      secure: true, 
      auth: {
        user: "your_account_id",
        pass: "your_api_key",
      },
    });
    
    const sendSmtpEmail = async () => {
      const info = await transporter.sendMail({
        from: '"Sender" <hello@simplysend.dev>',
        to: "bob@simplysend.email",
        subject: "Hello via SMTP",
        text: "Sent via Simply Send SMTP Relay.",
        html: "<b>Sent via Simply Send SMTP Relay.</b>",
      });
    
      console.log("Message sent: %s", info.messageId);
    };

    Connect easily with any service

     Simply Send  works seamlessly with all your favorite tools and platforms.

    Supabase
    Netlify
    Netlify
    Auth0
    Auth0
    NextAuth
    Laravel
    Laravel
    WordPress
    WordPress
    Django
    Django
    Rails
    Rails
    Metabase
    Metabase
    Retool
    Retool
    Supabase
    Netlify
    Netlify
    Auth0
    Auth0
    NextAuth
    Laravel
    Laravel
    WordPress
    WordPress
    Django
    Django
    Rails
    Rails
    Metabase
    Metabase
    Retool
    Retool
    Full Observability

    Every Event, In Detail

    Stop guessing what happened to your emails. Track every delivery, open, and click with surgical precision through our real-time event stream.

    Magic Link: Sign in to Simply Send

    To: bob@simplysend.email|Sent: 2/2/26, 8:00 AM|click
    CLICK2/2/26, 8:00 AM (UTC)
    Contact List:5678yuibhjnk-7890-9879-jhgi-98uibhjvtf7uyi_tx_list
    Date:2026-02-02
    Destination:bob@simplysend.email
    DeviceInfo:{"os":"macOS","device":"desktop","browser":"Chrome 144"}
    Email ID:em_550e8400-e29b-41d4-a716-446655440000
    Hour:8
    Interaction IP:8.8.8.8
    Link:https://app.simplysend.email/auth/callback?token=eyJhbGc...
    Message ID:0100019c1d5dd282-c8be736c-4cf3-4e07-a10f-d1550ee3dea-000000
    Plan:pay_as_you_go
    Source:auth@simplysend.dev
    Source IP:8.8.8.8
    Auto Delete:2/2/26, 2:40 AM
    User Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36
    UserId:5678yuibhjnk-7890-9879-jhgi-98uibhjvtf7uyi
    OPEN2/2/26, 8:00 AM (UTC)
    Contact List:5678yuibhjnk-7890-9879-jhgi-98uibhjvtf7uyi_tx_list
    Date:2026-02-02
    Destination:bob@simplysend.email
    DeviceInfo:{"os":"macOS","device":"desktop","browser":"Chrome 144"}
    Email ID:em_550e8400-e29b-41d4-a716-446655440000
    Hour:8
    Interaction IP:8.8.8.8
    Message ID:0100019c1d5dd282-c8be736c-4cf3-4e07-a10f-d1550ee3dea-000000
    Plan:pay_as_you_go
    Source:auth@simplysend.dev
    Source IP:8.8.8.8
    User Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36
    UserId:5678yuibhjnk-7890-9879-jhgi-98uibhjvtf7uyi
    DELIVERY2/2/26, 8:00 AM (UTC)
    Contact List:5678yuibhjnk-7890-9879-jhgi-98uibhjvtf7uyi_tx_list
    Date:2026-02-02
    DeliveryTimestamp:2026-02-02T08:00:14.915Z
    Destination:bob@simplysend.email
    Email ID:em_550e8400-e29b-41d4-a716-446655440000
    From Domain:simplysend.dev
    Hour:8
    Message ID:0100019c1d5dd282-c8be736c-4cf3-4e07-a10f-d1550ee3dea-000000
    MX Host:gmail-smtp-in.l.google.com
    Plan:pay_as_you_go
    ProcessingTimeMillis:389
    Source:auth@simplysend.dev
    Source IP:8.8.8.8
    UserId:5678yuibhjnk-7890-9879-jhgi-98uibhjvtf7uyi
    SEND2/2/26, 8:00 AM (UTC)
    Contact List:5678yuibhjnk-7890-9879-jhgi-98uibhjvtf7uyi_tx_list
    Date:2026-02-02
    Destination:bob@simplysend.email
    Email ID:em_550e8400-e29b-41d4-a716-446655440000
    From Domain:simplysend.dev
    Hour:8
    Message ID:0100019c1d5dd282-c8be736c-4cf3-4e07-a10f-d1550ee3dea-000000
    Plan:pay_as_you_go
    Source:auth@simplysend.dev
    Source IP:8.8.8.8
    UserId:5678yuibhjnk-7890-9879-jhgi-98uibhjvtf7uyi

    Your Order #8921-TX Confirmation

    To: tommy@simplysend.email|Sent: 2/9/26, 6:31 AM|complaint
    COMPLAINT2/9/26, 6:31 AM (UTC)
    ComplainedRecipients:{"emailAddress":"tommy@simplysend.email"}
    ComplaintFeedbackType:abuse
    Contact List:3418d4d8-6011-7053-b9e4-df4342a56918_default_lis...
    Date:2026-02-09
    Destination:tommy@simplysend.email
    Email ID:email_1770618709381_rtucvgbg8ui
    From Domain:simplysend.dev
    Hour:6
    Message ID:0100019c41196533-54812d97-669e-4b8b-889a-d7328ad52...
    Plan:pay_as_you_go
    Source:Simply Send Shop <orders@simplysend.dev>
    Source IP:8.8.8.8
    Auto Delete:5/11/26, 6:31 AM
    UserId:5678yuibhjnk-7890-9879-jhgi-98uibhjvtf7uyi
    Raw Event Data
    {
      "mail": {
        "commonHeaders": {
          "subject": "Your Order #8921-TX Confirmation",
          "from": [
            "Simply Send Shop <orders@simplysend.dev>"
          ],
          "to": [
            "tommy@simplysend.email"
          ]
        },
        "tags": {
          "Plan": [
            "pay_as_you_go"
          ],
          "Tier": [
            "tier2"
          ],
          "Type": [
            "transactional"
          ]
        }
      },
      "complaint": {
        "complaintFeedbackType": "abuse",
        "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36",
        "arrivalDate": "2026-02-09T06:31:49.783Z"
      }
    }
    DELIVERY2/9/26, 6:31 AM (UTC)
    Contact List:3418d4d8-6011-7053-b9e4-df4342a56918_default_lis...
    Date:2026-02-09
    DeliveryTimestamp:2026-02-09T06:31:49.806Z
    Destination:tommy@simplysend.email
    Email ID:email_1770618709381_rtucvgbg8ui
    From Domain:simplysend.dev
    Hour:6
    Message ID:0100019c41196533-54812d97-669e-4b8b-889a-d7328ad52...
    Plan:pay_as_you_go
    ProcessingTimeMillis:507
    Source:Simply Send Shop <orders@simplysend.dev>
    Source IP:8.8.8.8
    Auto Delete:5/11/26, 6:31 AM
    UserId:5678yuibhjnk-7890-9879-jhgi-98uibhjvtf7uyi
    SEND2/9/26, 6:31 AM (UTC)
    Contact List:3418d4d8-6011-7053-b9e4-df4342a56918_default_lis...
    Date:2026-02-09
    Destination:tommy@simplysend.email
    Email ID:email_1770618709381_rtucvgbg8ui
    From Domain:simplysend.dev
    Hour:6
    Message ID:0100019c41196533-54812d97-669e-4b8b-889a-d7328ad52...
    Plan:pay_as_you_go
    Source:Simply Send Shop <orders@simplysend.dev>
    Source IP:8.8.8.8
    Auto Delete:5/11/26, 6:31 AM
    UserId:5678yuibhjnk-7890-9879-jhgi-98uibhjvtf7uyi

    Ready to send?

    Start sending emails for free. No credit card required. Up to 1,000 emails/month on the free tier.