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SquirrelMail is a PHP-based Web email client. It includes built-in pure PHP support for IMAP and SMTP, and renders all pages in pure HTML 4.0 for maximum compatibility across browsers. It has strong MIME support and a flexible plugin system.
NOCC is a simple and fast Webmail client which can handle POP3 and IMAP mailboxes and sends email via SMTP. It is written with PHP, has low requirements (no database, frames). Features multi-language support, MIME attachments, displays HTML messages.
The installation guide comes with the source code:
https://sourceforge.net/p/nocc/code/HEAD/tree/trunk/webmail/docs/INSTALL
If you encounter problems or bugs you can always try the current HEAD...
An extremely configurable portable GUI email and news client for Windows/Unix (including OS X) with IMAP, POP3, SMTP, and NNTP support, SSL, flexible address database, Python scripting, powerful filtering, and many other features for advanced users.
Manitou-Mail is a free Qt-based database-driven Mail User Agent with associated scripts. It stores mailboxes and mail messages as structured data, accessible (possibly concurrently) by SQL, in addition to providing common mailer features and some more.
Crawl websites, sync to vector databases, and power RAG applications. Pre-built integrations for LLM pipelines and AI assistants.
Build data pipelines that feed your AI models and agents without managing infrastructure. Crawl any website, transform content, and push directly to your preferred vector store. Use 10,000+ tools for RAG applications, AI assistants, and real-time knowledge bases. Monitor site changes, trigger workflows on new data, and keep your AIs fed with fresh, structured information. Cloud-native, API-first, and free to start until you need to scale.
Jnestor is a majordomo developed in java: it can reads an IMAP/POP3 folder (email folder), identifies the elements in it and process them, transforming them as Mantis issues.
The software is still experimental, but it passed succesfully the last stages of testing and I hope I will release a stable version soon.
EGroupware has moved to Github, please find all our downloads there: https://github.com/EGroupware/egroupware/releases
EGroupware is a multi-user, web-based groupware suite. Currently available modules include: email, addressbook, calendar, infolog (notes, to-do's, phone calls), content management, wiki, project management, tracker, timesheet, knowledge base, CalDAV/CardDAV
Go Gmailer is a java based desktop app to send emails.
Go Gmailer is a java based desktop app to send emails.It is developed for people having slow internet connection.It is real simple and quick to send emails from this app.
N.B.: It is recommended to create an app password for this app and choose remember me option to login after entering the app password so that you don't have to remember the app password for your G-mail account separately.This is JAVA based app so no doubt of security!
If you have any issues with app then feel free to...
Hastymail is a fast, secure, rfc-compliant, cross-platform IMAP/SMTP client application written in PHP providing a clean web interface for sending and reading E-mail.
This version of Hastymail is no longer being developed. We are now working on a new version, Hastymail 3, AKA, "Cypht".
http://cypht.org
This plugin enables Roundcube to access the addressbook of the user in a Kolab-Envoirenment.
So you can keep your addresses in Roundcube in sync with the address in your other (Kolab-enabled) PIM-clients (like Thunderbird, Outlook and so on).
This plugin adds to RoundCube the ability to easily give different permissions to users by creating a roles table and assigning users to it. This and other plugins may use its public function to register permissions and admin them with this plugin.
Platemail is a cross-platform email client written in Java, featuring built-in, configurable spam detection and filtering capabilities, the potential for a variety of user interfaces and the option of storing mail in a relational database.
AtMail is an open source webmail client written in PHP. We aim to provide a elegant Ajax webmail client for existing IMAP mailservers, with less bloat and a focus on an intuitive, simple user interface.
Your own mailing system (most easiest to use with zero configuration) for the entire world (available in almost all the languages of the world) which will include Mail User Agent and Mail Transfer Agent thus trying to give maximum speed while transferrin
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.
Spamato is a spam filter system that combines several anti-spam techniques, from which thousands of users benefit. It is available as an add-on for Thunderbird and Outlook, and as a stand-alone proxy for other email clients. IMAP and POP are supported.
mail2m (Mail 2 Many) is a tiny simple bulk mail sender, designed to send a simple html mail to a group of friends. Recipients list can contain up to 200 (and more ?) recipients. No database and only basic smtp configuration is needed.
Mobile Mail Checker is a mail client for portable devices: java phones/smartphones/PDAs. It is based on J2ME. The most important features are: POP3/IMAP/SMTP support, reading/writing/replying/forwarding mails, SSL support, multimedia attachments supported
Ni!Mail is a webmail connecting to an IMAP server and using python/nevow/twisted to provide a clean and fast interface. It uses nevow livepage, a library that uses XMLHTTPRequest, to make it very dynamic.
A multiplatform (Unix/Linux, Windows and Mac OS X) mail client with native versions for each platform and features such as appointments and NNTP newsgroups.
Tortoise Mail is a POP3 and SMTP E-Mail Client written in PHP. By using PEAR Package DB, it supports many SQL-Based Databases (dbase, fbsql, ibase, ifx, msql, mssql, mysql, oci8, odbc, pgsql, sqlite, sybase). It is also PHP 5.x compatible.
BasiliX is a webmail application based on PHP and IMAP, and powered by the MySQL database server. It supports simple mail actions, sending/receiving attachments, an addressbook with group capability, configurable, multiple languages and multiple folders
MailDB adds a database back-end to an IMAP server for features such as "virtual" mail folders (msgs appearing in multiple folders), "view" folders (dynamic results of searches), etc. The DB is inherently multi-user, allowing msg reference counting.
Toby is a PHP webmail application. It retreives e-mail messages from a POP or IMAP server and stores them in a MySQL database for easy archival. It is full-featured, containing many features usually found only in non-web mail clients.
PHP Mail Central (phpMC) is a web based multiuser email client written in PHP. It uses a mysql backend to store all collected emails (from POP3 or IMAP4 accounts) in a local database.