Version history
K-9 Mail
18
ASO score
Text
21/100
Reviews
0/100
Graphic
40/100
Other
0/100
App Rating
3.9
Votes
11.33M
App Age
7y 4m
Last Update
Nov 18, 2025
iAP
$5.5 - 220
Compare with Category Top Apps
|
Metrics
|
Current App
|
Category Top Average
|
Difference
|
|---|---|---|---|
|
Installs
|
9.5M
|
495.5M
|
-98%
|
|
Rating
|
3.86
|
4.15
|
-7%
|
|
Number of Ratings (Voted)
|
8.9M
|
528.2M
|
-98%
|
|
App Age
|
7y 3m
|
9y 5m
|
-23%
|
|
In-app Purchases Price
|
$103
|
$103
|
0
%
|
|
Update Frequency
|
75d
|
180d
|
-58%
|
|
Title Length
|
8
|
25
|
-68%
|
|
Short Description Length
|
72
|
65
|
+11%
|
|
Description Length
|
989
|
2 646
|
-63%
|
|
Number of Screenshots
|
630
|
1022
|
-38
%
|
|
Has Video?
|
No
|
0% has videos
|
|
|
Size
|
0MB
|
0MB
|
|
Category Ranking in United States
7 days
Last 7 days
Last 30 days
Last 90 days
Last 180 days
Last year
| Top | Dec 18, 2025 | Dec 25, 2025 |
|---|---|---|
|
No results were found!
|
||
| Top | Dec 18, 2025 | Dec 25, 2025 |
|---|---|---|
|
No results were found!
|
||
| Top | Dec 18, 2025 | Dec 25, 2025 |
|---|---|---|
|
No results were found!
|
||
| Top | Dec 18, 2025 | Dec 25, 2025 |
|---|---|---|
|
No results were found!
|
||
Downloads
Downloads Graph
Total
9.5M
Last month
16.4K
Text ASO
Title
(
Characters:
8
of 50
)
K-9 Mail
Short Description
(
Characters:
72
of 80
)
K-9 Mail is a 100% open source, privacy focused email client for Android
Description
(
Characters:
989
of 4000
)
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.}
Read more
Other
Additional Information
| Rating: | |
| Voted: | 11.33M |
| Google Play Link: | |
| Website: | |
| Email: | |
| Privacy Policy: | |
| Categories: | Communication |
| Size: | - |
| iAP: | 5.5 - 220 $ |
| Installs: | 9.48M |
| App Age: | 7 years 4 months |
| Release Date: | Sep 07, 2018 |
| Last Update: | Nov 18, 2025 |
| Version: | 14.0 |
Version history
14.0
Nov 18, 2025
- 'Auto-fit messages' setting did not persist<br>- Edge-to-edge move/copy regressed with 3-button nav<br>- Swiping message left/right could abort prematurely<br>- Outlook SMTP failed authentication for some accounts<br>- Gmail folder prefixes appeared after refreshing folder list<br>- Quiet time preferences were ignored<br>- Thunderbird could crash after deleting an account
13.0
Oct 20, 2025
- Sync logging limited to 24 hours<br>- Client certificate not displayed in SMTP settings<br>- "Enable debug logging" did not provide verbose logging<br>- Scrolling short email could trigger left/right swipe<br>- Landscape scrolling only worked in center of some screens<br>- IMAP folder operations broken with prefixes<br>- HTML/table rendering display broken<br>- Application crashed opening placeholder folder