Best KMail Alternatives in 2026
Updated
20 apps from email clients ranked against KMail on the same published basis.
- 1KMail vs Zoho Mail
- 2KMail vs Mozilla Thunderbird
- 3KMail vs Spark Mail
- 4KMail vs eM Client
- 5KMail vs Spike
- 6KMail vs Mailbutler Smart Assistant
- 7KMail vs Newton Mail
- 8KMail vs BlueMail
- 9KMail vs Epistles Mail
- 10KMail vs Mailspring
- 11KMail vs Canary Mail
- 12KMail vs Apple Mail
- 13KMail vs Edison Mail
- 15KMail vs Roundcube
- 16KMail vs Dove
- 17KMail vs Saymail
- 18KMail vs Airmail
- 19KMail vs PigeonPost
- 20KMail vs Velo
- 21KMail vs Workspace ONE Boxer
KMail alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Zoho Mail | 9.6 | Free plan | $0.08/mo | Android, iOS, Linux, Mac, Web, Windows |
| 2 | Mozilla Thunderbird | 9.3 | Free plan | Free | Android, Linux, Mac, Windows |
| 3 | Spark Mail | 9.3 | Free plan | $8.25/mo | Android, iOS, Mac, Windows |
| 4 | eM Client | 9.3 | Free plan | $3.33/mo | Android, iOS, Mac, Windows |
| 5 | Spike | 9.2 | Free plan | $4/mo | Android, iOS, Mac, Web, Windows |
| 6 | Mailbutler Smart Assistant | 9.2 | Free plan | $7/mo | Android, Browser, iOS, Linux, Mac, Web, Windows |
| 7 | Newton Mail | 9.1 | Free plan | $5/mo | Android, iOS, Mac, Windows |
| 8 | BlueMail | 9.1 | Free plan | Free | Android, iOS, Linux, Mac, Windows |
| 9 | Epistles Mail | 9.1 | Free plan | $2.92/mo | Android, iOS, Linux, Mac, Web, Windows |
| 10 | Mailspring | 9.0 | Free plan | Linux, Mac, Windows | |
| 11 | Canary Mail | 9.0 | Free plan | $3/mo | Android, iOS, Mac, Windows |
| 12 | Apple Mail | 8.9 | Free plan | Free | iOS, Mac |
| 13 | Edison Mail | 8.8 | Free plan | Android, iOS, Mac, Windows | |
| 15 | Roundcube | 8.7 | Free plan | Free | Linux, self-hosted, Web |
| 16 | Dove | 8.7 | Free plan | $16.67/mo | Android, iOS, Mac, Web, Windows |
| 17 | Saymail | 8.7 | Free plan | €3.25/mo | Android, iOS, Linux, Mac, Windows |
| 18 | Airmail | 8.6 | Free plan | $2.50/mo | iOS, Mac |
| 19 | PigeonPost | 8.6 | Free plan | Free | Linux, Mac, Windows |
| 20 | Velo | 8.6 | Free plan | Free | Linux, Mac, Windows |
| 21 | Workspace ONE Boxer | 8.5 | No | $5.40/mo | Web, Windows, Mac, Linux, iOS, Android |
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Questions about KMail alternatives
What is the best alternative to KMail?
Zoho Mail, number 1 in email clients with a score of 9.6 out of 10. The others here: Mozilla Thunderbird, Spark Mail, eM Client and 16 more.
What is the best free alternative to KMail?
Zoho Mail is the best-ranked alternative with a free plan. 19 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: documentation depth, a free tier and the platforms it runs on.