Thunderbird for Android / K-9 Mail

17.0

New:

Account avatar customization (#10335)
Foldable device support with split-screen (#9760)
Email messages can be printed (#10216)
Unified folder account indicator identifies message ownership (#10083)
Display account avatar in message notifications (#7089)

Fixed:

Edge-to-edge regressions affected account setup screens (#10214, #10235, #10257)
Tap behavior was unreliable in recipient fields (#10367)
Incorrect icon was displayed for 'Find folder' (#10271)
Device orientiation change duplicated recipient field text (#10288)
Copied link text incorrectly included CSS (#10115)
Unselecting 'Colorize contact pictures' setting did not persist (#9630)
Some general settings were not preserved after export and import (#10149)