AI summary
Open-source email client with multiple accounts, a unified inbox, background sync, search, and OpenPGP encryption. This update fixes issues with message editing, attachments, notifications, and account navigation.
Generated by AI. May contain inaccuracies.
Screenshots
About this app
K-9 Mail is an open source email client that can be used with basically all mail service providers.
characteristics
* Support multiple accounts * unified inbox * Privacy friendly (no tracking, only connected to your email service provider) * Automatic background synchronization or push notifications * Local and server-side search * OpenPGP Email Encryption (PGP/MIME)
Install the application OpenKeychain: Easy PGP and use OpenPGP to encrypt/decrypt email.
support
If you are experiencing problems using K-9 Mail, please seek help on our support forum.
Want to help?
K-9 Mail is a community development project. If you are interested in helping improve apps, please join us! You can find our error tracker, source code and wiki here at https://github.com/thunderbird/thunderbird-android. We always welcome new developers, designers, documentarians, translators, testers and friends to join us.
📄 License Apache License,Version 2.0.
What's new
- New: New funding appeal helps keep Thunderbird alive! (#11526, #11547, #11580, #11588, #11615, #11620, #11677)
- Fixed: Message composer could crash when rotating the screen or editing a message as new (#11302) HTML signature text could disappear after rotating the screen (#11528, #11555) Deleted email notifications could reappear or remain in the notification shade (#10936) Some HTML drafts hid attachments while editing and could permanently lose them on save (#954) Add to contacts crashed the app when no Contacts app was installed (#11548) Sending large PGP-encrypted attachments showed no progress during encryption (#5763) Account drawer behaved inconsistently when reselecting an account or tapping its icon (#11461) Account drawer controls blocked accounts and folders on small displays (#11476) Sort menu indicator (bullet point) was duplicated each time the menu was opened (#11274)
About this version
- Version
- 25.0 (39047)
- Size
- 10.73 MB
- Requires Android
- 6.0
- Target SDK
- 23
- Architecture
- arm64-v8a, armeabi-v7a, x86, x86_64
- Downloads
- 22
- Updated
- Nov 11, 2026
- Package
- com.fsck.k9
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