OpenSMTPD

OpenSMTPD alternatives

The platforms standing nearest to OpenSMTPD on Mail Server Software.

Nearest on its board

  1. 22
    AJ
    Apache Jamesjames.apache.org

    Apache James is a modular mail server running on the JVM.

    5.9 APIOpenFree Free tier
  2. 24
    D
    Dovecotdovecot.org

    Dovecot Community Edition is an open-source email server.

    5.8 APIOpenFree Free tier
  3. 21
    MM
    Maddy Mail Servermaddy.email

    Maddy implements the functionality to send and receive email over SMTP and store messages with IMAP access.

    5.9 APIOpenFree Free tier
  4. 25
    H
    Harakaharaka.github.io

    Haraka is a high-performance, flexible SMTP server written in Node.js.

    5.7 APIOpenFree Free tier
  5. 20
    I
    IceWarpicewarp.com

    IceWarp is an all-in-one collaboration platform combining email, messaging, video conferencing, file sharing, and real-time document collaboration in one…

    5.9 APIOpenFree From $1.35/mo
  6. 26
    ME
    Microsoft Exchange Onlinemicrosoft.com

    Exchange Online is hosted email for business, with email, calendar, and contacts accessible across major browsers and devices.

    5.6 APIOpenFree —
  7. 19
    CI
    Cyrus IMAPcyrusimap.org

    Cyrus IMAP is an email, contacts, and calendar server.

    5.9 APIOpenFree Free tier
  8. 27
    KC
    Kerio Connectsupport.kerioconnect.gfi.com

    Kerio Connect is an email and instant messaging server with multiple deployment options, Outlook integration, web email, and mobile access.

    5.6 APIOpenFree —
  9. 18
    ZC
    Zimbra Collaborationzimbra.com

    Zimbra is an enterprise email and collaboration suite with email, calendar, contacts, tasks, and file sharing.

    6.0 APIOpenFree Free tier
  10. 28
    MM
    MDaemon Messaging Servermdaemon.com

    MDaemon is a Windows email server positioned as an alternative to Microsoft Exchange and Microsoft 365.

    5.6 APIOpenFree —
  11. 17
    PI
    poste.ioposte.io

    Poste.io is a self-hosted email server with web administration, webmail, spam protection, and mail server components in one Docker container.

    6.0 APIOpenFree Free tier · from $349/yr
  12. 29
    ZS
    Zentyal Serverzentyal.com
    5.4 APIOpenFree Free tier · from $230/yr (lower tiers unpriced)
  13. 16
    H
    hMailServerhmailserver.com

    hMailServer is a self-hosted mail server that supports SMTP, IMAP and POP3.

    6.0 APIOpenFree Free tier
  14. 30
    CP
    CommuniGate Procommunigate.com

    CommuniGate Pro is a unified communications server for email, calendaring, VoIP, video, instant messaging, and whiteboards.

    5.2 APIOpenFree —
  15. 15
    M
    Modoboamodoboa.org

    Modoboa is an open-source platform for installing and managing a self-hosted email server.

    6.1 APIOpenFree Free tier · from €139/yr
  16. 31
    HD
    HCL Dominohcl-software.com
    5.2 APIOpenFree —
  17. 14
    P
    Postfixpostfix.org

    Postfix aims to be fast, easy to administer, and secure.

    6.1 APIOpenFree Free tier
  18. 32
    V
    vSMTPviridit.com
    4.8 APIOpenFree Free tier
  19. 13
    MI
    Mail-in-a-Boxmailinabox.email

    Mail-in-a-Box turns a fresh cloud computer into a mail server that lets users run their own email service.

    6.1 APIOpenFree Free tier
  20. 33
    OX
    4.3 APIOpenFree —