Sterna Mail

Android

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Freedom report

Two barsScore 6.5

Free tierA free tier is on its own pricing page
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

Sterna Mail is ranked #74 of 143 in email clients on Freedom251. It runs on Android. There is a free plan.

Sterna Mail plans and pricing

All plans

Free Free Free software under the GPLv3. JMAP support · IMAP/SMTP support · Unified inbox · Offline local cache · Scheduled sending sternamail.org · 20 Sept 2026

Sterna Mail Free Free Android email client · GPLv3 sternamail.org · 11 Oct 2026

Compared on email clients

Free plan: Yes
App coverage: mobile
Unified inbox: Yes
Offline access: Yes
Scheduled sending: Yes
Calendar tools: Yes

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The record

Product: Sterna Mail is a private email client for Android that supports JMAP and IMAP/SMTP.
Mail accounts: It supports multiple accounts, JMAP and IMAP side by side, and an offline unified inbox.
Reading: Reading features include conversations, search as you type, and snooze.
Writing: Writing features include multiple identities with individual signatures, undo send, and scheduled send.
Encryption: OpenPGP encryption is available through an app such as OpenKeychain.
Privacy: The app says it has no analytics, advertising, crash reporting, or third-party SDK, and that the project has no server of its own to receive data.
Tracking protection: Remote images and tracking pixels are blocked until requested, and tracking parameters can be stripped from links.
Notifications: Push notifications work without Google Play Services through JMAP EventSource, IMAP IDLE, or UnifiedPush.
Compatibility: The app works with any IMAP/SMTP provider and supports JMAP.
Setup: Users can set up an account using only their email address or enter settings manually if the domain publishes no configuration.
Installation: The project offers installation through F-Droid, Obtainium, or a direct APK download.
Minimum Android version: The listed version 1.6.0 requires Android 8.0 or newer.
Build verification: The project says F-Droid rebuilds each release from published source and checks it byte for byte against the distributed app.
Support: The project links to an issue tracker for bug reports.
Price from: Free

Where it ranks on Freedom251

Best Email Clients in 2026#74 of 143

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Sources

sternamail.org· checked 11 Oct 2026
f-droid.org/packages/app.sterna/· checked 11 Oct 2026