How It Works
Sign up, email in, AI out. That's the whole idea.
Sign Up. Send. Receive.
1. Sign Up
Register your email address at motd.com. Free accounts get 1 message per day. Takes 30 seconds.
2. Send an Email
Open any email client. Write to ai@motd.com. Your subject line and body become your prompt.
3. AI Processes It
Your message reaches our servers. Claude generates a thoughtful response in seconds.
4. Check Your Inbox
The response arrives as a normal email reply. Read it, forward it, save it—it's just email.
Free. Plus. Pro.
Start free, upgrade when you need more
Free Plan
- 1 message per day
- 500 word prompt limit
- Attachments up to 500KB
- Claude Haiku model
- Best effort response
- Zero data retention
Try it free. No credit card required. See pricing →
Plus Plan
- 24 messages per day
- 2,000 word prompt limit
- Attachments up to 1MB
- Claude Sonnet 4 model
- Fast response time
- Zero data retention
Great for daily use and longer conversations. See pricing →
Pro Plan
- 48 messages per day
- Unlimited prompt length
- Attachments up to 5MB
- Claude Opus 4 model
- Priority response time
- Zero data retention
Maximum power for demanding workflows. See pricing →
Elegant Authentication
Login credentials built into the email address itself
The Problem with Email Auth
Websites have login forms. APIs have auth headers. But email? No built-in authentication. Other services force awkward workarounds—special headers users can't set, body prefixes that clutter messages, or trusting easily-spoofed From addresses.
Our Solution: Token Addresses
Your address 7086-3612@motd.com contains your credentials. The first part (7086) is your permanent user ID—like a username. The second part (3612) is your rotatable PIN—like a password. Authentication is invisible; you just send to an address.
Two-Factor by Design
Your token only works when sent from your registered email. Even if someone sees your address, they can't use it without also controlling your email account. Two factors, zero friction.
Rotate Your PIN
Change your PIN anytime—your user ID stays the same. During the grace period, both old and new PINs work so nothing breaks. Like changing a password, but simpler.
Works Everywhere
Any email client, any device, any script that can send mail. No special configuration, no SDK, no headers to set. If you can send email, you can authenticate.
Zero Retention
We process your message and send the response. Nothing stored. Your email client is your archive—nothing on our servers to hack, subpoena, or breach.
For Developers
Email is the original API
Script It
Send emails via sendmail, curl with SMTP, or any programming language's mail library. Parse responses from your inbox. No SDK required.
echo "Summarize this..." | \
mail -s "Request" 7086-3612@motd.comIntegrate It
Forward emails to MOTD for summarization. CC ai@motd.com on threads for analysis. Build email-based workflows with AI assistance.
- No API keys to manage
- No OAuth flows
- No rate limit headers
- No breaking changes