Best KMail Alternatives in 2026
Updated
20 apps from email clients ranked against KMail on the same published basis.
- 1KMail vs Mozilla Thunderbird
- 2KMail vs Zoho Mail
- 3KMail vs Spark Mail
- 4KMail vs eM Client
- 5KMail vs Spike
- 6KMail vs Mailbutler Smart Assistant
- 7KMail vs Mailspring
- 8KMail vs Newton Mail
- 9KMail vs Canary Mail
- 10KMail vs Epistles Mail
- 11KMail vs Airmail
- 12KMail vs Velo
- 13KMail vs Dove
- 14KMail vs Saymail
- 15KMail vs EmailOps
- 16KMail vs Twobird
- 17KMail vs MailMate
- 18KMail vs Mailbird
- 19KMail vs Ferry Email
- 20KMail vs InkMail
KMail alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Mozilla Thunderbird | 9.6 | Free plan | Free | Android, Linux, Mac, Windows |
| 2 | Zoho Mail | 8.4 | Free plan | $0.08/mo | Android, iOS, Linux, Mac, Web, Windows |
| 3 | Spark Mail | 8.2 | Free plan | $8.25/mo | Android, iOS, Mac, Windows |
| 4 | eM Client | 8.2 | Free plan | $3.33/mo | Android, iOS, Mac, Windows |
| 5 | Spike | 8.1 | Free plan | $4/mo | Android, iOS, Mac, Web, Windows |
| 6 | Mailbutler Smart Assistant | 8.1 | Free plan | $7/mo | Android, Browser, iOS, Linux, Mac, Web, Windows |
| 7 | Mailspring | 8.0 | Free plan | — | Linux, Mac, Windows |
| 8 | Newton Mail | 8.0 | Free plan | $5/mo | Android, iOS, Mac, Windows |
| 9 | Canary Mail | 8.0 | Free plan | $3/mo | Android, iOS, Mac, Windows |
| 10 | Epistles Mail | 8.0 | Free plan | $2.92/mo | Android, iOS, Linux, Mac, Web, Windows |
| 11 | Airmail | 7.7 | Free plan | $2.50/mo | iOS, Mac |
| 12 | Velo | 7.6 | Free plan | Free | Windows, Mac, Linux |
| 13 | Dove | 7.6 | Free plan | $20/mo | Web, Windows, Mac, iOS, Android |
| 14 | Saymail | 7.6 | Free plan | €3.25/mo | Windows, Mac, Linux, iOS, Android |
| 15 | EmailOps | 7.5 | Free plan | Free | Linux, Mac, Windows |
| 16 | Twobird | 7.4 | Free plan | Free | Web, Windows, Mac, iOS, Android |
| 17 | MailMate | 7.3 | Free plan | $10/mo | Mac |
| 18 | Mailbird | 7.3 | Free plan | $5.75/mo | Windows, Mac |
| 19 | Ferry Email | 7.2 | Free plan | Free | Windows, Mac |
| 20 | InkMail | 7.1 | Free plan | Free | Windows |
Make your app an alternative to KMail
See the priceThe sponsored alternative slot on this page is labelled and never changes the order above.
Questions about KMail alternatives
What is the best alternative to KMail?
Mozilla Thunderbird, number 1 in email clients with a score of 9.6 out of 10. The others here: Zoho Mail, Spark Mail, eM Client and 16 more.
What is the best free alternative to KMail?
Mozilla Thunderbird is the best-ranked alternative with a free plan. 20 of the 20 alternatives here publish a free plan on their own pricing pages.
Is there an open-source alternative to KMail?
Yes: Mozilla Thunderbird.
How are these alternatives ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation. Paid placements never change a rank.