Displaying 1 to 20 from 97 results

Zimbra - Email and Collaboration Suite

  •    Java

Zimbra is the most capable open source email and collaboration suite available today. It provides support for Email, Shared calendar, Document management, Pop3, Address book and lot more. Mails could be tagged and search support is also provided. Zimbra is considered as an alternative to Microsoft Exchange Server.

JavaMail - Java library to build Mail and Messaging Applications

  •    Java

The JavaMail API is a set of abstract APIs that model a mail system. The API provides a platform independent and protocol independent framework to build Java technology based email client applications. The JavaMail API provides facilities for reading and sending email. Service providers implement particular protocols. Several service providers are included with the JavaMail API package; others are available separately.

MailKit - A cross-platform .NET library for IMAP, POP3, and SMTP.

  •    CSharp

MailKit is a cross-platform mail client library built on top of MimeKit.The main goal of this project is to provide the .NET world with robust, fully featured and RFC-compliant SMTP, POP3, and IMAP client implementations.

mailit - A tiny drop-in REST API to send emails

  •    Javascript

A tiny drop-in REST API to send emails.Mailit is a drop-in microservice for sending emails over a REST API.




node-imap - An IMAP client module for node.js.

  •    Javascript

node-imap is an IMAP client module for node.js.This module does not perform any magic such as auto-decoding of messages/attachments or parsing of email addresses (node-imap leaves all mail header values as-is).

DavMail - POP/IMAP/SMTP/Caldav to Exchange

  •    Java

DavMail is a POP/IMAP/SMTP/Caldav/Carddav/LDAP exchange gateway allowing users to use any mail/calendar client (e.g. Thunderbird with Lightning or Apple iCal) with an Exchange server, even from the internet or behind a firewall through Outlook Web Access. DavMail now includes an LDAP gateway to Exchange global address book and user personal contacts to allow recipient address completion in mail compose window and full calendar support with attendees free/busy display.

Mailspring - A beautiful, fast Webmail

  •    Javascript

Mailspring is built on the modern web with Electron, React, and Flux. It is designed to be extensible, so it's easy to create new experiences and workflows around email.

Rainloop Webmail - Simple, modern & fast web-based email client

  •    PHP

Simple, modern & fast web-based email client.Modest system requirements, decent performance, simple installation and upgrade, no database required - all these make RainLoop Webmail a perfect choice for your email solution.


Roundcube Webmail - Browser-based multilingual IMAP client

  •    PHP

Roundcube Webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an email client, including MIME support, address book, folder management, message searching and spell checking.

docker-mailserver - A fullstack but simple mailserver (smtp, imap, antispam, antivirus, ssl

  •    Shell

A fullstack but simple mail server (smtp, imap, antispam, antivirus...). Only configuration files, no SQL database. Keep it simple and versioned. Easy to deploy and upgrade. Before you open an issue, please have a look this README, the Wiki and Postfix/Dovecot documentation.

James - Enterprise Mail Server

  •    Java

James (a.k.a Java Apache Mail Enterprise Server) is a 100% pure Java SMTP and POP3 Mail server, and NNTP News server designed to be a complete and portable enterprise mail/messaging engine solution based on currently available open messaging protocols.

imbox - Python IMAP for Human beings

  •    Python

You can run the imbox tests with tox.

neomutt - :email: Teaching an Old Dog New Tricks -- IRC: #neomutt on irc.freenode.net

  •    C

Hopefully this will build the community and reduce duplicated effort. NeoMutt was created when Richard Russon (@FlatCap) took all the old Mutt patches, sorted through them, fixed them up and documented them.

Maddy - Composable all-in-one mail server

  •    Go

Maddy Mail Server implements all functionality required to run a e-mail server. It can send messages via SMTP (works as MTA), accept messages via SMTP (works as MX) and store messages while providing access to them via IMAP. In addition to that it implements auxiliary protocols that are mandatory to keep email reasonably secure (DKIM, SPF, DMARC, DANE, MTA-STS). It replaces Postfix, Dovecot, OpenDKIM, OpenSPF, OpenDMARC and more with one daemon with uniform configuration and minimal maintenance cost.

Mailu - Mail server as a set of Docker images

  •    Python

Mailu is a simple yet full-featured mail server as a set of Docker images. The project aims at providing people with an easily setup, easily maintained and full-featured mail server while not shipping proprietary software nor unrelated features often found in popular groupware.

IRedMail - Free, Open Source Email Server Solution for Linux

  •    Shellscript

iRedMail is a fully fledged, full-featured mail server solution. It uses open source packages like Postfix, Dovecot, Apache, MySQL, OpenLDAP, Amavisd, RoundCube etc to provide this solution.

Thunderbird - Email Client

  •    C++

Thunderbird is most popular simple e-mail, newsgroup and news feed client. It is comparable to Microsoft outlook. It supports features such as Firefox's tabbed browsing, Email search, Message archive, Spam filtering, Message grouping, SSL, TLS, POP3 and IMAP support and lot more.

SharpWebMail - ASP.NET Webmail Application

  •    CSharp

SharpWebMail is an ASP.NET webmail application that is written in C#. It uses a POP3 or IMAP servers as the mailstore and sends mail through a SMTP server. It is very simple to configure (only a few settings in the web.config file). You can compose HTML messages, search your inbox, read complex mime messages, have multiple address books and much more.

MailCore 2 - Simple and asynchronous API to work with e-mail protocols IMAP, POP and SMTP

  •    C++

MailCore 2 provides a simple and asynchronous Objective-C API to work with the e-mail protocols IMAP, POP and SMTP. The API has been redesigned from the ground up.






We have large collection of open source products. Follow the tags from Tag Cloud >>


Open source products are scattered around the web. Please provide information about the open source projects you own / you use. Add Projects.