Private Mail for Project 404
@4-0-4.io Email, Built for Privacy
Create custom aliases, send and receive mail from your 404 account, and keep control of your inbox. The client is fast, simple, and works without JavaScript.
What you get
- Up to 25 active aliases per account
- Inbox, sent, starred, and archived folders
- Manual sync controls and server-side rate limits
- No tracking scripts and no JavaScript dependency
Alias Isolation
Use different addresses for different services. If one alias gets noisy, forfeit it and keep the rest of your identity clean.
Encryption Friendly
Pair your alias with OpenPGP for end-to-end message encryption and signed communication. Project 404 includes a full guide to help you configure GPG quickly.
Security by Design
CSRF protection, access controls, and strict sender validation are built into core email flows. You can only send from aliases you own.
Encryption model
Transport encryption is used when talking to mail servers. For true end-to-end privacy, use PGP/GPG so only intended recipients can read message content.