Krafter Mail

Transactional and broadcast email API for developers. Send emails via a clean REST API or connect your existing app through SMTP relay with TLS.

Features

• REST API & SMTP — Two ways to send: JSON API or standard SMTP on port 465
• Streams — Every send is routed through transactional (default tracking_enabled: false) or broadcast (default tracking_enabled: true, list-unsubscribe header added)
• Open & click tracking — Applied through the SES configuration set attached to the resolved stream policy. Krafter does not rewrite your HTML — overrides are per-message via the tracking_enabled body field (REST) or the X-Krafter-Tracking-Enabled header (SMTP)
• Webhooks — Real-time delivery, bounce, complaint, open, click, and failure events with HMAC-SHA256 signatures
• Domain management — SES domain verification and DKIM setup
• Statistics — Aggregate and per-day send/delivery/open/click/bounce counts

Quick links

• Quickstart — Send your first email in 5 minutes
• Authentication — API keys and scopes
• SMTP Relay — Connect via SMTP
• API Reference — Full endpoint documentation
• JavaScript SDK — Node.js / TypeScript client
• Elixir SDK — Elixir client library

Base URL

https://app.krafter.dev/api/v1

All API requests require a Bearer token. See Authentication for details. Requests are subject to platform rate limits.