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GoMailer
Self-hosted email server for your app and your AI agents
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.
Hi Product Hunt! 👋
Every app ends up needing email: welcome emails, password resets, a newsletter to thousands of users. Sending one is easy. Sending many properly isn't: rate limits, retries, duplicates after a restart, global unsubscribes, bounces, GDPR...
GoMailer is that whole layer, already built and tested, in a single binary you run on your own server:
• One API call for a single email, or a CSV for a campaign
• Smart retries, no duplicates, one-click unsubscribe (Gmail/Yahoo compliant)
• Bounce & complaint handling for SES, Postmark, Mailgun, SendGrid and Brevo
• Any SMTP, or Resend's API if your host blocks SMTP
• Built-in MCP server: Claude, ChatGPT, Gemini or Cursor can check and send campaigns, with read-only keys if you want
No per-email fees, and your lists stay on your server. One-time $9.99.
Happy to answer anything about the architecture or the MCP side!
About GoMailer on Product Hunt
“Self-hosted email server for your app and your AI agents”
GoMailer was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #73 on the daily leaderboard. 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.
On the analytics side, GoMailer competes within Email, Developer Tools and Artificial Intelligence — topics that collectively have 1M followers on Product Hunt. The dashboard above tracks how GoMailer performed against the three products that launched closest to it on the same day.
Who hunted GoMailer?
GoMailer was hunted by Ingeniero Binario. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of GoMailer including community comment highlights and product details, visit the product overview.
Ingeniero Binario