Tacitus Mail is a zero-knowledge email service built on OpenPGP. Your messages are encrypted in your browser before they ever reach our servers — and we built it to serve millions, not thousands.
Free to start. No credit card. Your keys, your data.
Every mailbox is encrypted end-to-end using the OpenPGP standard. We can't read your mail — and we built the infrastructure to prove it.
Your PGP keypair is generated in your browser. The private key never leaves your device unencrypted, ever.
We store ciphertext, not plaintext. Even a full database dump reveals nothing about your messages.
First-class clients for iOS, macOS, and Windows — plus a fast web UI. Same keys, every device.
Full-text search works even though your mail is encrypted, using blind indexes that reveal nothing to us.
Three steps to a mailbox we physically cannot read.
Pick your you@tacitusmail.com address. Your browser generates a PGP keypair on the spot.
Your private key is encrypted with your password using Argon2id, then stored. We never see it in the clear.
Mail to another Tacitus user is encrypted automatically. For external recipients with a public key, we encrypt too.
Transparency matters. Here's exactly what hits our database.
Read the technical whitepaper or review the open-source code.
Half the price of the competition. Twice the storage where it counts.
Private email for everyone.
No credit card required
More storage, more aliases.
Billed annually
The full Tacitus suite.
Billed annually
Need plans for your team? Contact sales for Business →
All prices in EUR. VAT added where applicable. Cancel any time.
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