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 Newton Mail
- 6KMail vs Spike
- 7KMail vs Canary Mail
- 8KMail vs Mailbutler Smart Assistant
- 9KMail vs Airmail
- 10KMail vs FairEmail
- 11KMail vs Epistles Mail
- 12KMail vs Dove
- 13KMail vs Saymail
- 14KMail vs Apple Mail
- 15KMail vs Missive
- 16KMail vs BlueMail
- 17KMail vs Polymail
- 18KMail vs Workspace ONE Boxer
- 19KMail vs Twobird
- 20KMail vs Superhuman Mail
KMail alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Mozilla Thunderbird | 9.7 | Free plan | Free | Android, Linux, Mac, Windows |
| 2 | Zoho Mail | 9.7 | Free plan | $0.08/mo | Android, iOS, Linux, Mac, Web, Windows |
| 3 | Spark Mail | 9.7 | Free plan | $8.25/mo | Android, iOS, Mac, Windows |
| 4 | eM Client | 9.7 | Free plan | $3.33/mo | Android, iOS, Mac, Windows |
| 5 | Newton Mail | 9.5 | Free plan | $5/mo | Android, iOS, Mac, Windows |
| 6 | Spike | 9.5 | Free plan | $4/mo | Android, iOS, Mac, Web, Windows |
| 7 | Canary Mail | 9.4 | Free plan | $3/mo | Android, iOS, Mac, Windows |
| 8 | Mailbutler Smart Assistant | 9.4 | Free plan | $7/mo | Android, Browser, iOS, Linux, Mac, Web, Windows |
| 9 | Airmail | 9.3 | Free plan | $2.50/mo | iOS, Mac |
| 10 | FairEmail | 9.3 | Free plan | Free | Android |
| 11 | Epistles Mail | 9.3 | Free plan | $2.92/mo | Android, iOS, Linux, Mac, Web, Windows |
| 12 | Dove | 9.0 | Free plan | $16.67/mo | Android, iOS, Mac, Web, Windows |
| 13 | Saymail | 8.9 | Free plan | €3.25/mo | Windows, Mac, Linux, iOS, Android |
| 14 | Apple Mail | 8.7 | No | — | Mac, iOS |
| 15 | Missive | 8.7 | No | $14/mo | Web, Windows, Mac, iOS, Android |
| 16 | BlueMail | 8.7 | No | — | Windows, Mac, Linux, iOS, Android |
| 17 | Polymail | 8.6 | No | $10/mo | Web, Windows, Mac, iOS |
| 18 | Workspace ONE Boxer | 8.6 | No | $5.40/mo | Web, Windows, Mac, Linux, iOS, Android |
| 19 | Twobird | 8.6 | Free plan | Free | Web, Windows, Mac, iOS, Android |
| 20 | Superhuman Mail | 8.5 | No | $2.08/mo | Web, Windows, Mac, iOS, Android |
Make your app an alternative to KMail
See the priceThe sponsored alternative slot on this page is labelled Sponsored.
Questions about KMail alternatives
What is the best alternative to KMail?
Mozilla Thunderbird, number 1 in email clients with a score of 9.7 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. 14 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 mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation.