Best KMail Alternatives in 2026
Updated
20 tools from email clients ranked against KMail on the same published basis.
- 1KMail vs Zoho Mail
- 2KMail vs Mailbutler Smart Assistant
- 3KMail vs Spark Mail
- 4KMail vs Epistles Mail
- 5KMail vs eM Client
- 6KMail vs Mailspring
- 7KMail vs Mozilla Thunderbird
- 8KMail vs Spike
- 9KMail vs Dove
- 10KMail vs Newton Mail
- 11KMail vs Canary Mail
- 12KMail vs Workspace ONE Boxer
- 13KMail vs Shortwave
- 14KMail vs Missive
- 15KMail vs Saymail
- 16KMail vs Airmail
- 17KMail vs PigeonPost
- 18KMail vs Velo
- 19KMail vs Sparrow
- 20KMail vs Superhuman Mail
KMail alternatives compared
| # | Tool | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Zoho Mail | 9.7 | Free plan | $0.08/mo | Android, iOS, Linux, Mac, Web, Windows |
| 2 | Mailbutler Smart Assistant | 9.4 | Free plan | $7/mo | Android, Browser, iOS, Linux, Mac, Web, Windows |
| 3 | Spark Mail | 9.3 | Free plan | $8.25/mo | Android, iOS, Mac, Windows |
| 4 | Epistles Mail | 9.3 | Free plan | $2.92/mo | Android, iOS, Linux, Mac, Web, Windows |
| 5 | eM Client | 9.0 | Free plan | $3.33/mo | Android, iOS, Mac, Windows |
| 6 | Mailspring | 9.0 | Free plan | Linux, Mac, Windows | |
| 7 | Mozilla Thunderbird | 8.9 | Free plan | Free | Android, Linux, Mac, Windows |
| 8 | Spike | 8.9 | Free plan | $4/mo | Android, iOS, Mac, Web, Windows |
| 9 | Dove | 8.9 | Free plan | $16.67/mo | Android, iOS, Mac, Web, Windows |
| 10 | Newton Mail | 8.8 | Free plan | $5/mo | Android, iOS, Mac, Windows |
| 11 | Canary Mail | 8.8 | Free plan | $3/mo | Android, iOS, Mac, Windows |
| 12 | Workspace ONE Boxer | 8.5 | No | $5.40/mo | Web, Windows, Mac, Linux, iOS, Android |
| 13 | Shortwave | 8.5 | $30/mo | Android, iOS, Mac, Web, Windows | |
| 14 | Missive | 8.4 | No | $14/mo | Web, Windows, Mac, iOS, Android |
| 15 | Saymail | 8.4 | Free plan | €3.25/mo | Windows, Mac, Linux, iOS, Android |
| 16 | Airmail | 8.3 | Free plan | $2.50/mo | iOS, Mac |
| 17 | PigeonPost | 8.3 | Free plan | Free | Linux, Mac, Windows |
| 18 | Velo | 8.3 | Free plan | Free | Linux, Mac, Windows |
| 19 | Sparrow | 8.3 | Free plan | Free | Linux, Mac, Windows |
| 20 | Superhuman Mail | 8.2 | No | $2.08/mo | Web, Windows, Mac, iOS, Android |
Make your tool 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?
Zoho Mail, number 1 in email clients with a score of 9.7 out of 10. The others here: Mailbutler Smart Assistant, Spark Mail, Epistles Mail and 16 more.
What is the best free alternative to KMail?
Zoho Mail is the best-ranked alternative with a free plan. 16 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 on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.