K-9 Mail

Mozilla Thunderbird

In-app purchases

About this app

K-9 Mail is an open source email client that works with basically every email provider.

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)

Install the app "OpenKeychain: Easy PGP" to encrypt/decrypt your emails using OpenPGP.


Support

If you're having trouble with K-9 Mail, ask for help in our support forum at https://forum.k9mail.app


Want to help?

K-9 Mail is now part of the Thunderbird family and remains a community developed project. If you're interested in helping to improve the app, please join us! You can find our bug tracker, source code, and wiki at https://github.com/thunderbird/thunderbird-android
We're always happy to welcome new developers, designers, documenters, translators, bug triagers and friends.

Ratings and reviews

Perfect app (for my needs) and terribly underrated. It could set up my email account in no time while another app with a higher rating (and lower privacy level!) couldn't do that AT ALL (and there was no manual setup so I had to delete it). K-9 Mail is THE BEST option for me. Give it a try, and you won't be disappointed.

I loved K-9 before this update. But now it's so hard to distinguish between my accounts in the menu. Before, I'd given each one a different profile pic and color, so I always knew which account I was looking at. They also appeared in a set order, so I could navigate easily. Now 4 of my 5 accounts are labeled "GM," and the highlight color is the same for all 5. What?! AND each time I open an account, the list order shifts, so they're never in a predictable order! Wish there were a way to revert.

Customizable, schedulable, sane, private. Handles multiple accounts, makes it easy to switch between accounts, has a unified Inbox to display all messages together, doesn't advertise to me, and displays all messages perfectly. It's just an email client, and a very good one. I didn't start using it until the Thunderbird folks took it over, and I wish I had tried it sooner.

What’s new

K-9 Mail version 22.0

New:
- Incognito Keyboard privacy setting
- Thundermail interim screen when adding account

Changed:
- Selected sort option now shows indicator in sort menu

Fixed:
- Messages could scroll horizontally when content fit screen
- Thread deletion confirmation incorrectly said only one message would be deleted
- Notification actions difficult to scroll/reorder on small screen
- Show Headers collapsed multi-line email headers into single line