SMTP & Delivery Services
Send through our managed delivery infrastructure or connect your own Amazon SES, Brevo, Mailgun, SendGrid or SMTP account.
Get started freeManaged delivery
Provider priority, limits and health monitoring handled for you.
Bring your own provider
Encrypted credentials, connection tests and per-connection limits.
Domain authentication
SPF, DKIM, DMARC and Return-Path guidance with live DNS checks.
Bounce & complaint processing
Signed provider webhooks update suppressions automatically.
One-click unsubscribe
RFC 8058 List-Unsubscribe headers on every marketing email.
Rate limiting
Per-connection throttling and exponential-backoff retries.
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