Transactional Email API Built for Developers

Designed for Mission-Critical Notifications

When a user requests a two-factor security code or password reset, every second matters. SendPorter’s distributed dispatch engine processes outbound payloads in under 50 milliseconds, bypassing bloated marketing queues to ensure instant inbox arrival.

Sub-50ms Global Dispatch Architecture

Traditional email marketing vendors queue transactional emails behind massive marketing blasts, causing minutes of delay for critical OTP codes and password resets. SendPorter isolates transactional traffic completely:

• Zero Shared Marketing Queues: Transactional traffic operates on dedicated, non-blocking asynchronous event loops.
• Edge Pre-Validation: Payload syntax, recipient MX records, and domain authentication are validated at the edge before submission.
• Automated Suppression Shield: Known invalid mailboxes and previous hard bounces are dropped instantly without consuming quota.

curl -X POST https://api.sendporter.com/v1/send \
  -H "Authorization: Bearer sp_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "auth@yourdomain.com",
    "to": "user@example.com",
    "subject": "Your Security Verification Code",
    "html": "<p>Your code is <strong>948201</strong>.</p>",
    "tags": ["security", "2fa"],
    "track_opens": true,
    "track_clicks": true
  }'