Thunderbird

Thunderbird is a free and open source email, newsfeed, chat, and calendaring client

Not tested on a device yet. What that means

Thunderbird in Breadstick

Breadstick runs Debian's own thunderbird package for ARM64, the build a Debian 13 computer with an ARM processor installs, so Thunderbird should look and behave as it does on a Linux PC. On Samsung DeX, Floating mode opens it as its own window beside your Android apps, and Desktop mode runs it on a full Linux desktop.

With Device files granted, a document saved in your Linux Documents or Downloads folder is in Android's folder too, where Android apps can open it. More about office apps in Breadstick.

About Thunderbird

From the project's description

Thunderbird is a free and open source email, newsfeed, chat, and calendaring client, that’s easy to set up and customize. One of the core principles of Thunderbird is the use and promotion of open standards - this focus is a rejection of our world of closed platforms and services that can’t communicate with each other. We want our users to have freedom and choice in how they communicate.
Thunderbird is an open source project, which means anyone can contribute ideas, designs, code, and time helping fellow users.

From the project's AppStream metadata in Debian's thunderbird package, under CC0-1.0.

Developer: Thunderbird Project
Keywords: Addressbook, Contact, E-mail, News
Menu categories: Calendar, Email, Office

Related apps

All Linux office apps

Sources and licenses

Name, summary and description: the project's AppStream metadata in Debian's thunderbird package, under CC0-1.0.
Icon: the project's own, from Debian's AppStream icon cache for the thunderbird package; the project's license is MPL-2.0.
Versions and sizes: Debian's archive for ARM64, as on packages.debian.org.
Popularity: Debian Popularity Contest counts.