Privacy Policy
Last updated: May 18, 2026
Mailsnail prints and mails physical letters and postcards on behalf of users and AI agents acting under their accounts. To do that we have to handle a small set of personal data. This policy is written to be short and unambiguous.
What we collect
- Account data: email address, API key, billing information.
- Mail content: the text or imagery your agent sends, plus the recipient address you supply.
- Operational logs: request metadata (timestamps, IPs, error codes) for security and debugging.
What we do with it
- Print, fold, and post your mail via USPS.
- Run automated content moderation on each piece before printing to block spam, harassment, threats, and illegal content.
- Show your account history (mail you have sent and its delivery status).
- Bill you for production mail.
- Comply with legal obligations.
What we don't do
- We don't sell your data.
- We don't use mail content to train AI models.
- We don't share recipient addresses with anyone outside the postal supply chain (printer, USPS).
Retention
Mail content and recipient addresses are retained for 90 days for customer support and audit, then purged. Account and billing records are retained as long as required by tax and accounting law.
Your rights
You can request access, correction, or deletion of your data at any time by emailing hello@mailsnail.dev. If you're in the EU/UK, you have the rights granted under GDPR. If you're in California, you have the rights granted under CCPA.
Sub-processors
We rely on a small number of vendors to operate the service: cloud hosting, the print/mail facility, the payment processor, and standard observability tools. Current list available on request.
Changes
We'll update this page when the policy changes and post the new effective date above.