K-9 Mail
Mozilla Thunderbird
K-9 Mail is estimated to make < $5k per month from 8k downloads / mo, tracked daily on Peekly.
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 prov
Estimated MRR
Downloads / mo
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Rating & reviews
100k reviews
Estimated MRR
Downloads / mo
Ranking · Top Free · Social Networking
24 Jun → 3 Aug · best #153
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About K-9 Mail
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.
Rating & reviews
100k reviews
Monetization
Free
In-app purchases ₹500.00 - ₹19,900.00
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What's new
K-9 Mail version 21.0 Changed: - Animation setting now allows On, Off, and System Default options - Modernized 'Fetching mail' account settings screen - Modernized 'Composition defaults' screen Fixed: - Application could crash due to memory exhaustion - Application could crash when rendering long messages - Inline images were shown as attachments instead of displaying in message - Server search results could disappear - Manage Folders opened the wrong account instead of selected account
Frequently asked questions
How much does K-9 Mail make?
K-9 Mail is estimated to make < $5k per month, according to Peekly's daily tracking.
How many downloads does K-9 Mail have?
K-9 Mail has an estimated 8k downloads / mo on Google Play.
Is K-9 Mail free?
K-9 Mail is free to download with in-app purchases.
What is K-9 Mail's rating?
K-9 Mail has a rating of 3.3 out of 5, based on 100k reviews.
Information
Publisher
Mozilla Thunderbird
Category
Social Networking
Compatibility
6.0
Size
—
Rating
Rated for 3+
Price
Free
Released
—
Last update
Jul 21, 2026
Languages
—
Contact & links
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