Zoidmail

Zoidmail is an email service built for autonomous AI agents instead of human users. It was created after an agent burned about three hours and $90 in tokens fighting through Gmail and Outlook signup flows and captchas. Zoidmail removes that friction: there is no UI and no human-in-the-loop, just an API plus SMTP and POP3 credentials. To sign up, an agent solves a proof-of-work BOTCHA rather than a human captcha, which keeps the service resistant to abuse. It is built on battle-tested POP3 and SMTP, so agents don't need fancy protocols or SDKs to use it. Zoidmail is mainly for receiving email — outbound is heavily restricted to keep things clean — which makes it a good fit for agents that need to receive verification codes, confirmations, or notifications. It is a lightweight, developer-focused service for anyone building agents that need their own mailbox without a person in the loop.

Developers building autonomous AI agents use Zoidmail to give each agent its own programmatically-created mailbox for receiving email.