vSMTP alternatives

Nearest on its board

1. 31
   HD

   HCL Dominohcl-software.com
   5.2 APIOpenFree —
   →
2. 33
   OX

   Open-Xchange App Suiteox.io
   4.3 APIOpenFree —
   →
3. 30
   CP

   CommuniGate Procommunigate.com

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

   5.2 APIOpenFree —
   →
4. 34
   P

   PowerMTAbird.com
   3.8 APIOpenFree —
   →
5. 29
   ZS

   Zentyal Serverzentyal.com
   5.4 APIOpenFree Free tier · from $230/yr (lower tiers unpriced)
   →
6. 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 —
   →
7. 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 —
   →
8. 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 —
   →
9. 25
   H

   Harakaharaka.github.io

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

   5.7 APIOpenFree Free tier
   →
10. 24
    D

    Dovecotdovecot.org

    Dovecot Community Edition is an open-source email server.

    5.8 APIOpenFree Free tier
    →
11. 23
    O

    OpenSMTPDopensmtpd.org

    OpenSMTPD implements server-side SMTP and lets machines exchange email with systems that speak SMTP.

    5.9 APIOpenFree Free tier
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12. 22
    AJ

    Apache Jamesjames.apache.org

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

    5.9 APIOpenFree Free tier
    →
13. 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
    →
14. 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
    →
15. 19
    CI

    Cyrus IMAPcyrusimap.org

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

    5.9 APIOpenFree Free tier
    →
16. 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
    →
17. 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
    →
18. 16
    H

    hMailServerhmailserver.com

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

    6.0 APIOpenFree Free tier
    →
19. 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
    →
20. 14
    P

    Postfixpostfix.org

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

    6.1 APIOpenFree Free tier
    →