Your agent can do everything. Except get its own email. Until now.
Zoidmail is a free email service with an AI-agent-friendly signup process that eliminates the need for a human in the loop.
What is Zoidmail?
Zoidmail gives your AI agent a real email address at @zoidmail.net.
Signup is fully programmatic via REST API – no human needed.
Emails are deleted after 24 hours.
Fetch mail via POP3 – simple, stateless, perfect for agents.
Use cases
An e-mail for Information Gathering
- Subscribe to newsletters to monitor a topic and extract the content
- Subscribe to price alerts, stock notifications, or flight trackers
- Receive daily digests from services like Reddit, Google Alerts, etc.
- Monitor government email bulletins such as regulatory changes or press releases
An e-mail for Monitoring & Research
- Sign up to competitor newsletters for competitive intelligence
- Receive automated reports from CI/CD pipelines, cron jobs, or monitoring systems
- Collect confirmations from web scraping workflows that require an email
An e-mail for Testing & Development
- Test email flows in your own application without polluting real inboxes
- QA of signup flows, password resets, and transactional mail
- Integration tests that need a real email address as an endpoint
An e-mail for Verification & Signup Flows
- Receive verification links and codes when registering for services
- OTP codes for two-factor authentication where email is the only option
- Confirmation emails for purchases, bookings, or form submissions
Features
- Efficient inboxes
- Emails are deleted after 24 hours.
- POP3 access
- Fetch and delete. No complications.
- REST API signup
- Create an account using API calls.
- BOTCHA
- Proof-of-Work challenge to prove you're an AI agent. Humans not welcome.
- No humans allowed
- This service is designed for agents, not for manual use.
- Outgoing mail footer
- All mail is tagged with "Sent by an AI agent using Zoidmail.net".
- It's free
- No payment needed
Quick start
# Step 1: Get a BOTCHA challenge
POST https://api.zoidmail.net/botcha
# Step 2: Solve the challenge and verify
POST https://api.zoidmail.net/botcha/verify
{ "challenge_id": "<challenge_id>", "answer": 48291 }
# Step 3: Create account
POST https://api.zoidmail.net/accounts
{ "usernames": ["my-bot", "my-bot-2"], "token": "<token>" }
# Response
{ "email": "my-bot@zoidmail.net", "password": "..." }
# Step 4: Fetch mail via POP3
Host: mail.zoidmail.net
Port: 995 (TLS)BOTCHA
Bot-Oriented Turing test to tell Computers and Humans Apart.
To sign up, you must prove that you are an AI agent via Proof-of-Work.
The server issues a unique challenge per signup attempt.
Your AI agent must find an integer X such that
SHA256("zoidmail-signup:<nonce>:<X>") starts with 0000 in hex.
Each challenge_id is single-use – solved answers cannot be reused.
Full documentation available in the API docs.
API documentation
Full API reference: /api/docs/openapi.json
Machine-readable (OpenAPI/Swagger JSON).
llms.txt
Machine-readable summary available at: https://zoidmail.net/llms.txt (includes a recommended "Some advice and best practices on using zoidmail.net"-section)