🎉 100% Free — All Features Included

Free email addresses for AI agents

Give your AI a real email address in one API call. Receive verification codes, sign up for services, read incoming mail. No sending. No payment. No limits.

Get Your Free API Key → See How It Works
Create a mailbox in one callbash
# 1. Get your free API key
curl -X POST https://aiemailservice.com/v1/api-key/create

# 2. Create a mailbox (instant, free)
curl -X POST https://aiemailservice.com/v1/mailbox/create \
  -H "x-api-key: YOUR_KEY"

# 3. Check for emails
curl https://aiemailservice.com/v1/mailbox/MAILBOX_ID/codes \
  -H "x-api-key: YOUR_KEY"
# → {"codes": ["847291"], "from": "noreply@github.com"}

Everything you need. All free.

📬

Instant Mailboxes

Create a real email address in one API call. Active immediately. Up to 5 mailboxes per API key.

🔑

Auto OTP Extraction

Verification codes, OTPs, and tokens automatically extracted from incoming emails. Just call /codes.

⏳

Long-Poll Waiting

Don't poll in a loop. Use /wait to hang until a message arrives. Filter by sender or subject.

🔒

Receive-Only by Design

No sending capability at any layer. Zero spam risk. Domains never get blacklisted.

🔔

Webhooks

Set a callback URL when creating a mailbox. We'll POST to it whenever a new email arrives.

🤖

Built for AI Agents

JSON-first API. Structured responses. Auto-extracted codes. Designed for machines, not humans.

⌨️

CLI Tool

Install directly: npm install -g https://aiemailservice.com/aiemailservice-1.0.0.tgz — manage mailboxes, read messages, and extract codes from your terminal.

🔌

MCP Server

Native AI agent integration via Model Context Protocol. Install: npm install -g https://aiemailservice.com/aiemailservice-mcp-1.0.0.tgz — connect Claude, OpenAI, and other agents directly.

🌐

Multi-Agent Access

One API key works across unlimited agents and machines. No device tokens, no state to sync. Access from anywhere.

Multi-Agent Ready

One API Key. Unlimited Agents.

Share one API key across every agent, server, and pipeline. No device tokens, no local state, no syncing. Pure REST — access your mailboxes from anywhere.

🤖
Agent A
Creates mailbox on Server 1
🤖
Agent B
Reads messages on Server 2
🤖
Agent C
Extracts codes on laptop

How it works

1

Get a free API key

POST /v1/api-key/create — No signup, no email, no payment. Instant.

2

Create a mailbox

POST /v1/mailbox/create — Get a real email like agent-x7k@aiemailservice.com. Active immediately.

3

Use it anywhere

Sign up for GitHub, Stripe, AWS — whatever your agent needs. Emails land in your mailbox.

4

Read via API

GET /v1/mailbox/{id}/codes — Verification codes extracted automatically. Or use /wait to long-poll for new messages.

Simple pricing

Everything is free. Only pay if you want a custom vanity username.

Free

$0 forever

Everything you need for AI agent email.

  • Up to 5 mailboxes per API key
  • All endpoints: /messages, /latest, /wait, /codes
  • Auto OTP extraction
  • Webhooks
  • Long-poll waiting
  • 30-day message retention
  • 60 API calls per minute
  • Random username (e.g. agent-x7k@aiemailservice.com)

Custom Username

£99 / year

Reserve a vanity username for your brand.

  • Everything in Free
  • Choose your username (e.g. openai@aiemailservice.com)
  • Username reserved for 1 year
  • Renewable annually
  • Nobody else can claim your name
  • Perfect for branded AI agents
@aiemailservice.com

FAQ

Is it really free?
Yes. All features are free with no time limit. The only paid feature is reserving a custom vanity username like yourname@aiemailservice.com (£99/year). Random usernames are free forever.
Can my AI agent send emails?
No. This is receive-only by design. No SMTP outbound, no relay, no send endpoint. This eliminates spam risk and keeps our domains clean.
What does an email address look like?
Free accounts get random usernames: agent-x7k@aiemailservice.com. Paid custom usernames can be anything available: openai@aiemailservice.com, mybot@aiemailservice.com, etc.
How many mailboxes can I create?
5 per API key. Need more? Create additional API keys — they're free too.
Will services detect these are AI emails?
The domain aiemailservice.com looks like a normal email provider. We don't advertise which addresses belong to AI agents. Most services accept it without issue.
How long are messages stored?
30 days. After that, they're automatically deleted. Use webhooks or regular polling to capture messages you need to keep.
What's the rate limit?
60 API calls per minute. The /wait endpoint is designed to reduce polling — one long-poll call replaces dozens of requests.
How do you make money if it's free?
Custom username reservations (£99/year) and future enterprise features. We believe the free tier drives adoption, and vanity usernames are worth paying for.

Give your AI an email address

One API call. Free forever. No signup required.

Get Your Free API Key →