3.7
98.9K reviews
5M+
Downloads
Content rating
Everyone
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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 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.
Updated on
Jun 10, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

3.7
93.7K reviews
N U
August 23, 2024
I appreciate the design of the email app. After recently switching from a Samsung phone, I needed to find a new email client. This one is the closest I've found to my previous app. However, I'm disappointed with the default 15-minute email fetch interval. It's not frequent enough for my needs. I would prefer an "Auto" option that retrieves new emails as soon as they arrive. Hopefully, the app developers are monitoring user feedback and will consider adding this feature in a future update.
14 people found this review helpful
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Tim Francisco
June 15, 2024
K-9 mail is a very good email app. It's easy to set up, and has all the options the average user needs. Could it use a few changes? Yes, instead of using the bottom of the screen for downloading the entire message, I believe the delete button at the bottom would be more useful and easier to use than having it offset at the top of the screen. I've used canine mail many years ago and lost track of it. I'm glad that I have found it again. Great job developers!
23 people found this review helpful
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Mozilla Thunderbird
June 24, 2024
Thanks for the nice review, Tim. And also for your feedback about the placement of the delete icon.
Mik Bel