Sterna Mail is an open-source (GPL-3.0-or-later) Android app by emon. The APK we host is 4.6 MB, it needs Android 8.0 or newer, and it declares 11 permissions.
The file on this page is Sterna Mail 1.5.6, 4.62 MB, and it installs on Android 8.0 and newer.
We compared the signing certificate of this build with the certificate recorded the first time app.sterna entered the site, and published both the file's SHA-256 and the certificate's fingerprint above so you can check the download yourself. That comparison says the file was not repackaged by someone else; it is not a review of what the app does.
The manifest declares 11 permissions, including access to your contacts. Android asks you to approve those the first time the app needs them.
Its licence is GPL-3.0-or-later. We took this build from F-Droid, and the source for this exact version is linked below.
We do not show a star rating or an install count for this page: we have no measured figure for either, and a number we cannot source is worth less than an empty field.
- Version
- 1.5.6
- Size
- 4.62 MB
- Requires Android
- API 26
- Package
- app.sterna
- Signature checked on
- Sep 18, 2026
- Where this file came from
- F-Droid
- Licence
- GPL-3.0-or-later
- Source code
- Source for this version
File SHA-256: f168390750e992acb19b03d6bd338e5ae546f47f06b5224910e91cf7c5aff83c
Signing certificate (SHA-256): cf2d007f7bfa44e08e20943de4fe17fb0873707fd759d6db9cadb1f4b2aaedc4
We check that this file carries the same signing certificate as earlier releases of the same package. That shows the APK was not repackaged by someone else — it is not a security review of the app.
Declared permissions
- INTERNET
- ACCESS_NETWORK_STATE
- POST_NOTIFICATIONS
- READ_CONTACTS
- FOREGROUND_SERVICE
- FOREGROUND_SERVICE_SPECIAL_USE
- RECEIVE_BOOT_COMPLETED
- USE_BIOMETRIC
- USE_FINGERPRINT
- WAKE_LOCK
- app.sterna.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Screenshots
