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Best Mail Server Software in 2026 — page 2

  1. 26

    IceWarp

    Free trial AndroidAPIiPhone+4
    6.3 14-day trial Visit site
  2. 27

    Kerio Connect

    Free trial AndroidAPIiPhone+5

    Kerio Connect provides a broad mail and collaboration server with flexible deployment and migration options. Licensing and optional components should be reviewed alongside the requested mailbox count.

    6.3 Pricing on request · 30-day trial Visit site
  3. 28

    MDaemon Messaging Server

    Free trial AndroidiPhoneSelf-hosted+2
    6.1 30-day trial Visit site
  4. 29

    CommuniGate Pro

    Paid APILinuxSelf-hosted+2
    6.0 Pricing on request Visit site
  5. 30

    HCL Domino

    Paid AndroidAPIiPhone+4
    5.9 Pricing on request Visit site
  6. 31

    vSMTP

    Free plan Linux
    5.7 Free plan Visit site
  7. 32

    Microsoft Exchange Online

    by Microsoft Exchange Online
    Paid AndroidiPhoneMac+2

    Exchange Online combines hosted business email with administration, security, and compliance capabilities.

    5.6 Visit site
  8. 33

    Open-Xchange App Suite

    Paid AndroidiPhoneWeb
    4.3 Pricing on request Visit site
  9. 34

    PowerMTA

    Paid
    3.7 Pricing on request Visit site