Top 10 Open-Source Alternatives to Courier IMAP

Product categories

Email Email Clients Email Delivery Email Management Email Service Email Service Provider Enterprise Communication MTA Open Source SMTP Server Self-hosted Email

Summary

The top open-source alternatives to Courier IMAP are Dovecot, DBMail, and iRedMail. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Dovecot Landing Page
1

Dovecot

Dovecot is an open source IMAP and POP3 email server for Linux/UNIX-like systems, written with...
Pricing:
- Open Source
#Email #SMTP Server #Self-hosted Email
DBMail Landing Page
2

DBMail

DBMail is a fast, scalable IMAP4 and POP3 server that stores all email and users in a Postgresql...
Pricing:
- Open Source
#Email #Self-hosted Email #SMTP Server 4 social mentions
iRedMail Landing Page
3

iRedMail

A fully fledged, free email server solution, an open source project (GPL v2).
Pricing:
- Open Source
#Email #SMTP Server #Self-hosted Email 2 social mentions
Roundcube Landing Page
4

Roundcube

Web-based IMAP email client
Pricing:
- Open Source
#Email #SMTP Server #Email Clients 16 social mentions
mailcow Landing Page
5

mailcow

An open source mailserver suite.
Pricing:
- Open Source
#Email #Self-hosted Email #Email Service Provider 82 social mentions
Exim Landing Page
6

Exim

Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.
Pricing:
- Open Source
#SMTP Server #Email #MTA
Rainloop Landing Page
7

Rainloop

RainLoop is a web based email client.
Pricing:
- Open Source
#Email #Email Clients #Email Management
WildDuck Landing Page
8

WildDuck

Self hosted modern mail server
Pricing:
- Open Source
#Email #Self-hosted Email #Email Service 8 social mentions
SOGo Landing Page
9

SOGo

SOGo is groupware server with a focus on scalability and open standards.
Pricing:
- Open Source
#Email #Email Clients #Self-hosted Email 1 social mentions
OpenSMTPD Landing Page
10

OpenSMTPD

OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined by RFC 5321, with...
Pricing:
- Open Source
#SMTP Server #Email #MTA 2 social mentions