mail icon

mail

Arne-Brün Vogelsang
Internet Internet
Version
1.2.3
Size
8.0 MB
Requires
Android API 21+
4.3 / 5 · 8,137 ratings 46,445 downloads

Updated Nov 7, 2026

Quick answer

is a secure and open source e-mail client

monocles mail is a fork of the K-9 mail.

It comes with all the known functions of K-9 mail and will get some updates in the UI to improve usability.

Features: * supports multiple accounts * Unified Inbox * privacy-friendly (no tracking whatsoever, only connects to your email provider) * automatic background synchronization or push notifications * local and server-side search * OpenPGP email encryption (PGP/MIME)

Screenshots

mail screenshot 1
mail screenshot 2
mail screenshot 3
mail screenshot 4
mail screenshot 5

What’s new

* Updates from upstream
* Fixes
* Change registration link
* Correct strings

How to install

  1. Download the APK from the button at the top of this page.
  2. Allow “Install unknown apps” for your browser or file manager only, not for every app.
  3. Open the downloaded file and confirm the installation.
  4. If installation fails with “App not installed,” remove an earlier build of the same app first. A signature conflict is the usual cause.

Data safety

  • Every file is checked against its published SHA-256 before it is listed.
  • Files are scanned for malware on every update.
  • The permissions each app requests are listed on its own page.
  • Read the full safety policy for how we test, flag, and delist files.

Frequently asked questions

What is mail?
is a secure and open source e-mail client
Who develops mail?
mail is developed by Arne-Brün Vogelsang.
Which Android version does mail require?
mail requires Android API 21 or later.
What is the current version of mail?
The synchronized F-Droid version is 1.2.3.
Which license does mail use?
The signed F-Droid metadata lists Apache-2.0.
Where is the source code for mail?
https://codeberg.org/Arne/monocles_mail

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