Ai Email Service – Instant Free Receive-Only Email Addresses via API

Summary: Ai Email Service provides free, receive-only email addresses for AI agents through an API that autonomously creates mailboxes, receives emails, extracts verification codes, and waits for replies without human intervention. It supports long-polling, OTP extraction, HMAC-signed webhooks, and multi-agent key sharing, enabling persistent inboxes lasting 30 days.

What it does

The service automatically generates mailboxes for AI agents, receives emails, extracts one-time passwords, and delivers real-time notifications via webhooks. It uses long-polling to efficiently wait for incoming messages without repeated API calls and integrates with CLI and MCP tools like Claude and Cursor.

Who it's for

It is designed for developers building AI agents that require persistent, receive-only email addresses for tasks like automated sign-ups and verification code retrieval.

Why it matters

It solves the lack of purpose-built email solutions for AI agents by providing persistent, autonomous inboxes without human setup or the limitations of disposable or sending-focused email APIs.