Every app ends up needing email. GoMailer is that whole layer, already built: a self-hosted email server in Go that handles the queue, sending pace, smart retries, no duplicates, one-click unsubscribe, bounces/complaints and GDPR, with a live dashboard. Works with any SMTP (Amazon SES, Brevo, Postmark) or Resend's API. Built-in MCP so Claude, ChatGPT, Gemini or Cursor can check and send campaigns. One payment, no per-email fees.
