Sterna Mail
Private email client for JMAP and IMAP/SMTP. No Google services, no tracking.
Version: 1.6.0
Added: 10-07-2026
Updated: 03-10-2026
Added: 10-07-2026
Updated: 03-10-2026
Sterna Mail is a free, private email client for Android. It is built for JMAP, the modern successor to IMAP, and works just as well with any IMAP/SMTP provider.
No tracking, no ads, no Google services. The code is GPLv3, and F-Droid checks that the app it ships is byte for byte the one built from the published source.
Reading:
* Several accounts, JMAP and IMAP side by side, with a unified inbox that works offline
* Conversations, search as you type and snooze
Writing:
* Several identities, each with its own signature
* Undo send and scheduled send
Privacy and security:
* OpenPGP encryption through an app such as OpenKeychain
* Remote images and tracking pixels blocked by default, app lock with fingerprint or PIN
Setup and notifications:
* Setup from your email address alone, or a manual form when the domain publishes nothing
* Push notifications without Google, over JMAP, IMAP IDLE or UnifiedPush
* Available in ten languages
No tracking, no ads, no Google services. The code is GPLv3, and F-Droid checks that the app it ships is byte for byte the one built from the published source.
Reading:
* Several accounts, JMAP and IMAP side by side, with a unified inbox that works offline
* Conversations, search as you type and snooze
Writing:
* Several identities, each with its own signature
* Undo send and scheduled send
Privacy and security:
* OpenPGP encryption through an app such as OpenKeychain
* Remote images and tracking pixels blocked by default, app lock with fingerprint or PIN
Setup and notifications:
* Setup from your email address alone, or a manual form when the domain publishes nothing
* Push notifications without Google, over JMAP, IMAP IDLE or UnifiedPush
* Available in ten languages