Open Source Mac Email Software

Google Apps Manager or GAM is a free and open source command line tool for Google G Suite Administrators that allows them to manage many aspects of their Google Apps Account quickly and easily. With GAM you can create and manage users, groups and domains; manage email, security and calendar settings; manage admins and organizations and many more. To use GAM Google Apps Business, Education, Partner or Government Edition is required.

GreenMail is an intuitive and easy-to-use test suite of email servers for testing purposes. Supports SMTP, POP3, IMAP with SSL socket support, and configurable user accounts and credentials. All in 100% Java. WE'VE MOVED TO GIT HUB: https://github.com/greenmail-mail-test/greenmail

Hedwig is an open source IMAP, SMTP, POP3 server written in Java, designed with ease of installation and configuration in mind. Hedwig enables storage of mail message headers in a relational database(MySQL or Oracle) and mail messages in a file system. Visit http://hwmail.sourceforge.net/ for more information.

icarusWebMail is an open source WebMail, with POP3 and IMAP mailbox support, also supports APOP POP3/SSL POP3/TLS IMAP/SSL contacts lists from LDAP, anti-spam integration, Internationalization (by now es, en, fr), Filters, Drafts, Sent-Folder, Signature.

Konfidi is a trust framework that uses topical trust values from a social network of authenticated people. When you receive an email from someone you do not know, but he/she is in the network, Konfidi will compute an inferred trust value for you.

Free and light e-mail alert client. Multi-profile and multi-account support. Support for IMAP and IMAPS. Built-in settings for the most popular e-mail services (1&1, AOL, GMail, Hotmail, MobileMe, Yahoo! Mail, etc).

A.I. security app. Development ceased.

Simple Ajax Wiki that stores wiki pages into FileSystem or Subversion. It uses wikimodel syntaxe, JQuery for HTML DOM manipulation, DWR for Ajax and Spring for J2EE

AmavisAdmin is a tool to maintain SPAMs, Viruses and blocked mails written to an SQL database by Amavisd-new. Mails can be removed automatically or manually, or they can be released to be send to the recipients.

Arcjet helps developers protect their apps in just a few lines of code. Implement rate limiting, bot protection, email verification, and defense against common attacks. Native security for Bun, Next.js, Node.js, SvelteKit, Vercel, Netlify, Fly.io, and other modern platforms. Customizable protection for signup forms, login pages, API routes, and your whole app. Test security rules locally. Protection that works in every environment. No agent is required.

Mail Web Frontend based on Tapestry, Spring and Hibernate. Configure several accounts with one account

MobileCLI provides .NET ECMA-compatible runtime engine and library for develop mobile application on BREW, Symbian.

CURE provides a web-based environment for distributed collaboration. It was designed for lerning groups but is now also used to support busines collaboration. It combines wiki ideas with mailing lists, shared folders, chats, and room metaphors.

Community-based interoperability Utility for SMEs. Commius main objective is to support the SMEs with a zero, or very low-cost, entry into interoperability, based on non-proprietary protocols. Commius is an EU-FP7 funded project.

DKIM for JavaMail is a small JAR that can be easily implemented in existing Java projects using JavaMail for sending DKIM signed emails.

The Collaboration Environment, supporting e-Science, is a comprehensive resource sharing and collaboration platform specific for research group.

The goal of this project is to develop a very simple SMTP server that responds to SMTP requests and makes received messages available for query at a later time. All useful features for a SMTP server that can be used in an automated testing suite.

FilterBadRecruiters is a Google Apps Script that processes new messages looking for unwanted email from known third party recruiters. When a match is found, a reply is sent informing the sender that the message is being reported as spam and will not be read. The script then logs matches to a spreadsheet and updates a pie chart displaying what percentage of these type of messages were sent from each domain.

Framemail is a program that lets you check simeotaneously your Yahoo Mail, Gmail, Netscape Mail, Fastmail.FM, and Lycos Mail using frames. More are coming!!!

FusionGW is a cutting-edge open-source collaborative software suite. The goal of the FusionGW project is to build a framework to develop enterprise collaborative software under an open-source license.

JAmes Ldap List Server. A mailet for the Apache James email server which enables your existing groups in an LDAP directory to be mailed as though they are mailing lists.

WebMail is a Java Servlet application that gives users WWW access to their IMAP/POP mailboxes. It supports folders, multiple languages, composing messages, MIME and virtual domains.

JXchange is an mail server multiplataform, written in Java language, like MS-Exchange. This project includes SMTP server, POP3 server, IMAP server, web management interface and webmail designed to run in almost all OS.

This is the Home Page for the James Administration Console, an administration utility for the James Java Enterprise Email Server. The console aims to be fast, easy to use, and completely 100% Java, just like the server.

James-HA is a high availability distribution of Apache James. James-HA provides the capability of using multiple instances of Apache James against the same database backend for increased performance and automatic failover.