Open source Android email client with support for multi-folder sync, keyboard shortcuts, and more. Created by K-9 Dog Walkers K-9 Mail is not available for Windows but there are plenty of alternatives that runs on Windows with similar functionality. The most popular Windows alternative is Thunderbird, which is both free and Open Source. If that doesn’t suit you, our users have ranked 36 alternatives to K-9 Mail and 14 are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to K-9 Mail are Microsoft Office Outlook (Freemium), Mailspring (Freemium), Claws Mail (Free, Open Source) and Zoho Mail (Freemium).
Find Top 10
K-9 Mail
Alternatives
| # | Image | App Name | Features | Platforms | Price | Website Link |
| 2 |  |
Thunderbird | Mac Windows BSD Haiku Linux PortableApps.com |
Free | Website | |
| 3 |  |
Mailspring | Mac Arch Linux Fedora Windows Ubuntu Linux |
Freemium | Website | |
| 4 |  |
BlueMail | Mac Chrome OS Windows Android iPhone iPad Apple Watch Linux Android Tablet |
Free Personal | Website | |
| 5 |  |
TrulyMail | Discontinued | Windows | Freemium | Website |
| 6 |  |
Librem Mail | PureOS (Purism) | Android Android Tablet |
Free | Website |
| 7 | Claws Mail Alternatives and Similar Software | Windows Linux BSD |
Free | Website | ||
| 8 |  |
mBoxMail | iPhone | Commercial | Website | |
| 9 |  |
Zoho Mail | Web | Mac Windows Android iPhone Linux |
Freemium | Website |
| 10 |  |
Canary Mail | Mac iPhone Apple Watch iPad |
Commercial | Website | |
| 11 |  |
Columba | Discontinued | Mac Windows BSD Linux |
Free | Website |
| 12 |  |
SolMail | Discontinued | Android Android Tablet |
Free | Website |
| 13 |  |
Spark | Mac Android iPhone |
Freemium | Website | |
| 14 |  |
FairEmail | Android F-Droid Android Tablet |
Freemium | Website | |
| 15 |  |
ProfiMail | S60 | Windows Mobile Android Android Tablet |
Freemium | Website |
| 16 |  |
Mailsmith | Discontinued | Mac | Free | Website |
| 17 |  |
CloudEmail.io | Web | Freemium | Website | |
| 18 |  |
Consider | Web | iPhone iPad |
Commercial | Website |
| 19 |  |
TypeApp | Android iPhone Android Tablet Android Wear Kindle Fire iPad |
Free Personal | Website | |
| 20 |  |
Koma-Mail | Discontinued | Windows | Free | Website |
| 21 |  |
Email – Edison Mail | Android iPhone |
Free | Website | |
| 22 |  |
Tempo | Mac | Free | Website | |
| 23 |  |
Superhuman | Web | Commercial | Website | |
| 24 |  |
Kube | Linux | Free | Website | |
| 25 |  |
Mailbox for Zoho | Zoho Mail | Mac | Commercial | Website |
| 26 | Microsoft Office Outlook Alternatives for Android tagged with Calendar Integration | Mac Windows Online Android iPhone Android Tablet Windows Phone iPad Apple Watch Android Wear Online Windows Phone |
Free with limited functionality | Website | ||
| 27 |  |
SlideMail | iPhone | Free | Website | |
| 28 |  |
WorkSpace | Web | Commercial | Website | |
| 29 | Nylas Mail Lives | Discontinued | Mac Windows Self-Hosted Linux |
Free | Website | |
| 30 |  |
Hiri | Mac Windows Linux |
Commercial | Website | |
| 31 |  |
TouchMail | Windows S Windows |
Commercial | Website | |
| 32 |  |
Airmail | Mac iPhone Apple Watch iPad |
Commercial | Website | |
| 33 |  |
Aqua Mail | Android Tablet Android |
Freemium | Website | |
| 34 |  |
Mailroom | iPhone | Commercial | Website | |
| 35 |  |
EmailTray | Android Windows |
Free | Website | |
| 36 |  |
GyazMail | Mac | Commercial | Website | |
| 37 |  |
Juicy Mail | Web | Mac Windows Android |
Free | Website |