Is Secria Mail encrypted?
Yes. Mail between Secria users, and all mail stored in your mailbox, is sealed with a post-quantum key exchange.
Checked on 25 October 2026 against 2 sources.
This is our own app. It's graded by the same rules as every other app. How we check
Made by us- Between its own usersOnly you and the people you write toMail between Secria users, and all mail stored in your mailbox, is sealed with a post-quantum key exchange.1, 2
- To other servicesPartlyMail from other providers passes our spam filter as it arrives, then it's locked to your key.1
- Stored mailboxOnly youYour mailbox is stored with zero-access encryption, locked with a key made from your password on your device.1, 2
- Post-quantumYesMail between Secria users, and all mail stored in your mailbox, is sealed with a post-quantum key exchange.1, 2
- Who holds the keys
- Locked with a key made from your password, on your device.
Is Secria Mail end-to-end encrypted?
Mail between Secria users, and all mail stored in your mailbox, is sealed with a post-quantum key exchange1. Your mailbox is stored with zero-access encryption, locked with a key made from your password on your device1.
What about mail from Gmail or Outlook?
We don't read your mail, show ads or build a profile. Mail from other providers passes our spam filter as it arrives, then it's locked to your key1. That's why the table grades mail to and from other services as Partly, the same way it grades every service that seals mail between its own users.
Is Secria Mail quantum safe?
Mail between Secria users, and all mail stored in your mailbox, is sealed with a post-quantum key exchange1. The Mail whitepaper describes how it works2.
How Secria Mail compares
Sorted by how many parts are sealed by default, then by how many can be. Ties go A to Z.
Sources
- Secria security: post-quantum and zero-access encryption, Secria. Read on 25 Oct 2026.
- Secria whitepapers: how our encryption works, Secria. Read on 25 Oct 2026.
Changes to this answer
- First published.