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Best KMail Alternatives in 2026

12 platforms from email clients ranked against KMail on the same published basis.

  1. 1
    Hiver api $25/mo8.5
    KMail vs Hiver
  2. 2
    Mozilla Thunderbird Free plan Open sourceAndroidLinuxMacWin Free8.3
    KMail vs Mozilla Thunderbird
  3. 3
    Front api $25/mo8.0
    KMail vs Front
  4. 4
    Zoho Mail Free plan AndroidiOSLinuxMacWeb $0.08/mo7.5
    KMail vs Zoho Mail
  5. 5
    Spark Mail Free plan AndroidiOSMacWin $8.25/mo7.5
    KMail vs Spark Mail
  6. 6
    eM Client Free plan AndroidiOSMacWin $3.33/mo7.5
    KMail vs eM Client
  7. 7
    Newton Mail Free plan AndroidiOSMacWin $5/mo7.3
    KMail vs Newton Mail
  8. 8
    Canary Mail Free plan AndroidiOSMacWin $3/mo7.3
    KMail vs Canary Mail
  9. 9
    Mailbutler Smart Assistant Free plan AndroidextensioniOSLinuxMac $7/mo7.3
    KMail vs Mailbutler Smart Assistant
  10. 11
    Mailspring WinMacLinux 7.2
    KMail vs Mailspring
  11. 12
    Spike Free plan WebWinMaciOSAndroid $4/mo7.2
    KMail vs Spike
  12. 13
    Airmail Free plan iOSMac $2.50/mo7.2
    KMail vs Airmail
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