15 Amazing Open Source Email Servers for Desktop (2023)

The 15 amazing free and open-source email servers for Desktop with step guides, tutorials, videos, and instructions.

Forward Email Team
Written by
Forward Email TeamVerified
Published
12/1/23
Time to read
Less than 5 minutes

Email Server Screenshots

⭐ Recommended

Forward Email

⭐ Recommended
  • IMAP
  • SMTP
  • MX
  • SQLite Encrypted

Forward Email is an open-source email server for Desktop. The official description from its website says, "Privacy-focused encrypted email for you. We are the go-to email service for hundreds of thousands of creators, developers, and businesses. Send and receive email as you@yourdomain.com with your custom domain or use one of ours."

Forward Email is an open-source email server for Desktop.
Screenshot by Forward Email

Docker Mailserver

  • IMAP
  • SMTP
  • MX
  • SQLite Encrypted

Docker Mailserver is an open-source email server for Desktop. The official description from its website says, "docker-mailserver, or DMS for short, is a production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.)."

Docker Mailserver is an open-source email server for Desktop.
Screenshot by Forward Email

Maddy Mail Server

  • IMAP
  • SMTP
  • MX
  • SQLite Encrypted

Maddy Mail Server is an open-source email server for Desktop. The official description from its website says, "Maddy Mail Server implements all functionality required to run a e-mail server."

Maddy Mail Server is an open-source email server for Desktop.
Screenshot by Forward Email

Mail-in-a-Box

  • IMAP
  • SMTP
  • MX
  • SQLite Encrypted

Mail-in-a-Box is an open-source email server for Desktop. The official description from its website says, "Take back control of your email with this easy-to-deploy mail server in a box."

Mail-in-a-Box is an open-source email server for Desktop.
Screenshot by Forward Email

mailcow

  • IMAP
  • SMTP
  • MX
  • SQLite Encrypted

mailcow is an open-source email server for Desktop. The official description from its website says, "mailcow: dockerized is an open source groupware/email suite based on docker."

mailcow is an open-source email server for Desktop.
Screenshot by Forward Email

Dovecot

  • IMAP
  • SMTP
  • MX
  • SQLite Encrypted

Dovecot is an open-source email server for Desktop. The official description from its website says, "Dovecot is an excellent choice for both small and large installations."

Dovecot is an open-source email server for Desktop.
Screenshot by Forward Email

WildDuck

  • IMAP
  • SMTP
  • MX
  • SQLite Encrypted

WildDuck is an open-source email server for Desktop. The official description from its website says, "WildDuck is a modern mail server software for IMAP and POP3."

WildDuck is an open-source email server for Desktop.
Screenshot by Forward Email

Exim

  • IMAP
  • SMTP
  • MX
  • SQLite Encrypted

Exim is an open-source email server for Desktop. The official description from its website says, "Exim is a message transfer agent (MTA) originally developed at the University of Cambridge for use on Unix systems connected to the Internet."

Exim is an open-source email server for Desktop.
Screenshot by Forward Email

Postfix

  • IMAP
  • SMTP
  • MX
  • SQLite Encrypted

Postfix is an open-source email server for Desktop. The official description from its website says, "It is Wietse Venema's mail server that started life at IBM research as an alternative to the widely-used Sendmail program."

Postfix is an open-source email server for Desktop.
Screenshot by Forward Email

chasquid

  • IMAP
  • SMTP
  • MX
  • SQLite Encrypted

chasquid is an open-source email server for Desktop. The official description from its website says, "chasquid is an SMTP (email) server with a focus on simplicity, security, and ease of operation."

chasquid is an open-source email server for Desktop.
Screenshot by Forward Email

Haraka

  • IMAP
  • SMTP
  • MX
  • SQLite Encrypted

Haraka is an open-source email server for Desktop. The official description from its website says, "A modern, high performance, flexible SMTP server."

Haraka is an open-source email server for Desktop.
Screenshot by Forward Email

Postal

  • IMAP
  • SMTP
  • MX
  • SQLite Encrypted

Postal is an open-source email server for Desktop. The official description from its website says, "Postal is a complete and fully featured mail server for use by websites & web servers."

Postal is an open-source email server for Desktop.
Screenshot by Forward Email

ZoneMTA

  • IMAP
  • SMTP
  • MX
  • SQLite Encrypted

ZoneMTA is an open-source email server for Desktop. The official description from its website says, "ZoneMTA provides granular control over routing different messages. "

ZoneMTA is an open-source email server for Desktop.
Screenshot by Forward Email

keila

  • IMAP
  • SMTP
  • MX
  • SQLite Encrypted

keila is an open-source email server for Desktop. The official description from its website says, "Open Source Newsletter Tool."

keila is an open-source email server for Desktop.
Screenshot by Forward Email

listmonk

  • IMAP
  • SMTP
  • MX
  • SQLite Encrypted

listmonk is an open-source email server for Desktop. The official description from its website says, "Self-hosted newsletter and mailing list manager."

listmonk is an open-source email server for Desktop.
Screenshot by Forward Email

Email Server Comparison

NameDescriptionScreenshotIMAPMXSMTPSQLite Encrypted WebsiteWikipedia
Forward Email ⭐ RecommendedPrivacy-focused encrypted email for you. We are the go-to email service for hundreds of thousands of creators, developers, and businesses. Send and receive email as you@yourdomain.com with your custom domain or use one of ours. ScreenshotYesYesYesYesWebsite
Docker Mailserverdocker-mailserver, or DMS for short, is a production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.). ScreenshotYesYesYesNoWebsite
Maddy Mail ServerMaddy Mail Server implements all functionality required to run a e-mail server. ScreenshotYesYesYesNoWebsite
Mail-in-a-BoxTake back control of your email with this easy-to-deploy mail server in a box. ScreenshotYesYesYesNoWebsite Wikipedia
mailcowmailcow: dockerized is an open source groupware/email suite based on docker. ScreenshotYesYesYesNoWebsite
DovecotDovecot is an excellent choice for both small and large installations. ScreenshotYesNoNoNoWebsite Wikipedia
WildDuckWildDuck is a modern mail server software for IMAP and POP3. ScreenshotYesNoNoNoWebsite
EximExim is a message transfer agent (MTA) originally developed at the University of Cambridge for use on Unix systems connected to the Internet. ScreenshotNoYesYesNoWebsite Wikipedia
PostfixIt is Wietse Venema's mail server that started life at IBM research as an alternative to the widely-used Sendmail program. ScreenshotNoYesYesNoWebsite Wikipedia
chasquidchasquid is an SMTP (email) server with a focus on simplicity, security, and ease of operation. ScreenshotNoYesYesNoWebsite
HarakaA modern, high performance, flexible SMTP server. ScreenshotNoYesNoNoWebsite Wikipedia
PostalPostal is a complete and fully featured mail server for use by websites & web servers. ScreenshotNoYesNoNoWebsite
ZoneMTAZoneMTA provides granular control over routing different messages. ScreenshotNoYesNoNoWebsite
keilaOpen Source Newsletter Tool. ScreenshotNoYesNoNoWebsite
listmonkSelf-hosted newsletter and mailing list manager. ScreenshotNoYesNoNoWebsite