Open Source Java Email Clients

K-9 Mail is an advanced, open-source email client for Android that's focused on making it easy to chew through large volumes of email. It's designed to be easy to use by both novice and power users, with plenty of useful features. It has IMAP push email support, support for multiple accounts, support for POP3 and Exchange 2003/2007 (with WebDAV), flagging, filing, signatures and more! K-9 Mail also offers a light and dark theme, keyboard shortcuts and emoji support. Like man's best friend, K-9 Mail is an email client you can depend on, and will surely be your best friend when it comes to handling your emails!

LogicMail is a standalone E-Mail client designed to run on RIM BlackBerry handheld devices, providing full support for IMAP, POP, and SMTP over the device's Internet connection. Its exists to provide an alternative to the service-oriented "push" E

Columba is an email client written in Java, featuring a user-friendly graphical interface with wizards and internalionalization support. Its a powerful mail management tool with features to enhance your productivity and communication.

G4J is a set of API that communicate to GMail. Use this API to login, retrive/search/browse message, download attachment and do others action on GMail account! An email application (Gmailer for java) is included to demonstrate the usage of the API.

As an open source project for project management, Factory lets you organize actors in teams, define projects, create version-based plans, generate forecast calendars and track statuses. Small and stand alone, it runs on every system with Java.

JMail is a mail client written in Java. It handles attached files, HTML mails, filters and other stuff... It can be used with a LDAP directory.

With Tiger Envelopes you can stop snoops from reading your email. Same email client. No extra steps. One click to install on Windows and Linux. Configures Outlook, Thunderbird, and KMail. Supports GPG, PGP, Bouncy Castle encryption.

OpenJean is a cross-platform, extensible, personal information manager. It includes: file manager, RSS aggregator, calendar and appointments diary, mailer, image manager, multimedia manager, favorites, notes, tasks, anniversaries, topics and address book

The project was moved to http://mujmail.xf.cz/index.php !! an E-mail client for mobile devices supporting J2ME.

This is a Java Email client for academic purpose. It will include the general email client features and other experimental techniques such as uncertain reasoning, HCI principles. This project is not supported now.

A GUI-based email application capable of recording, compressing and sending voice messages.

Email2Fax and Fax2Email gateway for Asterisk, that could be integrated to your own existing Asterisk.

CIMAP is a pared-down IMAP client for Java ME-enabled cell phones (MIDP 2.0/CLDC 1.1), intended mainly to complement the use of IMAP for implementing the GTD (Getting Things Done) personal management methodology.

I often encountered an inability among users to think beyond SAP and MS. Goal of the project is to create a web based application management platform, which enables organisations to easily manage applications within the system.

CentraView - Browser based Enterprise Java (J2EE) Contact Management, Groupware, Collaboration, CRM, SFA, Project Management software. Run locally or as a hosted service. Built on Apache Tomcat, JBoss, MySQL, Linux (Fedora, RedHat and others) & Windows

This application is an email ( POP3/SMTP ) application built with eclipse 3.1.1. It shows the power of eclipse to build RCP apps. It is using the embedded version of Derby as the DBMS

CPO is a tool written in Java that manages newsletters. It's focused on corporate needs (privacy, scalability, bounce count, opt-in & out, newsletter statistics).

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

Daffodil Organizer is an e-mail client with the facility to import mails from the Microsoft Outlook's .pst files. In Daffodil Organizer mails are stored in RDBMS that provides maximum flexibility to organize your mails. You can also categorise your mail

Deinonychus is an email client written in Java featuring a GUI built with SWT. Supports MIME, Hotmail access, IMAP access, POP access, and SMTP.

A web mail service based on J2EE and open source sql database. It supported rules, addressbook, etc..

Eclipsemail is an e-mail client for the Eclipse platform. The original Eclipse Mail project on SourceForge was founded by Jordi Boehme Lopez and Leif Frenzel. That project is no longer maintained. Please visit http://eclipsemail.org instead.

Special email client that works with multiple accounts. Main function - check for number of emails changed from last time, and delete selected emails. Using JavaMail for operation. Requires Java 6 to run.

Emailtray is a tray icon software that monitorize and notify emails on Yahoo, AOL and Gmail accounts free and apps. Work without email client software because it use web interface.

Encki Mail is a web based e-mail system that focusses on ease of use for both the user and the system administrator. The project is being developed for Linux using the popular PHP + MySQL combination.