Free receive-only email for AI agents. Just point your agent at the API — it creates its own mailbox, receives emails, extracts verification codes, and waits for replies autonomously. No human setup needed. Features long-polling (no polling loops), automatic OTP extraction, HMAC-signed webhooks, and multi-agent key sharing. CLI & MCP integrations for Claude, Cursor & more. Receive-only by design — no spam. All features free, up to 5 mailboxes per key.
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Maker
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Hey Product Hunt! 👋
I built AI Email Service because I kept hitting the same wall — my AI agents needed email addresses to sign up for things, and there was nothing purpose-built for that.
The existing options were either full email APIs designed for sending (Mailgun, SendGrid) or temporary disposable inboxes that expire in minutes.
AI agents need something different:
Ability to create with no human interaction
Persistent addresses that last 30 days (not 10 minutes)
Long-polling so they can wait for a verification email without hammering an API
OTP extraction so they can pull a 6-digit code without parsing HTML
Webhooks so they can react to incoming mail in real-time
It's completely free — no credit card, no signup form, no trial limits. Just hit the API and go. The only paid feature is custom vanity usernames if you want yourbot@aiemailservice.com instead of a random ID.
I'd love to hear how you'd use this with your agents. What services are you trying to get your AI to sign up for? What's missing?
🔗 Docs: https://aiemailservice.com/docs
🧩 MCP: Works natively with Claude Desktop & Cursor