KumoMTA alternatives

Nearest on its board

1. 23
   W

   Whitemailwhitemail.io
   5.1 APIOpenFree Free tier
   →
2. 25
   SM

   Synology MailPlus Serversynology.com
   5.1 APIOpenFree Free tier
   →
3. 22
   G

   grommuniogrommunio.com
   5.6 APIOpenFree Free tier · from €1.99/mo
   →
4. 26
   SM

   Stalwart Mail ServerStalwart Labs
   5.0 APIOpenFree Free tier · from $2.40/yr
   →
5. 21
   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 —
   →
6. 27
   O

   OpenSMTPDopenbsd.org
   4.9 APIOpenFree Free tier
   →
7. 20
   D

   Dovecotdovecot.org

   Dovecot Community Edition is an open-source email server.

   5.8 APIOpenFree Free tier
   →
8. 28
   R

   RabiMailrabimail.com
   4.8 APIOpenFree From ₹199/mo
   →
9. 19
   AJ

   Apache Jamesjames.apache.org

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

   5.9 APIOpenFree Free tier
   →
10. 29
    CP

    CommuniGate Procommunigatepro.ru
    4.3 APIOpenFree —
    →
11. 18
    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
    →
12. 30
    EM

    EVO Mail Serverevomailserver.com
    4.3 APIOpenFree $259 one-time
    →
13. 17
    CI

    Cyrus IMAPcyrusimap.org

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

    5.9 APIOpenFree Free tier
    →
14. 31
    GE

    GreenArrow Engine On-Premisesgreenarrowemail.com
    4.3 APIOpenFree From $600/mo
    →
15. 16
    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
    →
16. 32
    MS

    Mailbux Self-Hostedmailbux.com
    4.3 APIOpenFree $1,499 one-time
    →
17. 15
    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. 33
    ME

    MDaemon Email Servermdaemon.com
    4.1 APIOpenFree —
    →
19. 14
    H

    hMailServerhmailserver.com

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

    6.0 APIOpenFree Free tier
    →
20. 13
    PM

    Pegasus Mailpmail.com

    Pegasus Mail is a free, standards-based email client for one or multiple users on a computer or local area network.

    6.0 APIOpenFree Free tier
    →