Open Source PHP Email Clients

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.

A PHP email creation and transport class featuring file attachments, SMTP servers, CCs, BCCs, HTML messages, word wrap, and more. Sends email via sendmail, PHP mail(), QMail, or with SMTP. PHPMailer is used by many popular PHP development frameworks and is one of the most popular email-generating and sending libraries in the world. This project is defunct here on sourceforge – it's now maintained on Github at https://github.com/PHPMailer/PHPMailer. Documentation is available at https://github.com/PHPMailer/PHPMailer/wiki

All your E-mail, from all your accounts, in one place. Cypht is not your father's webmail. Unless you are one of my daughters, in which case it is your father's webmail. Cypht is like a news reader, but for E-mail. Cypht does not replace your existing accounts - it combines them into one. And it's also a news reader. The driving force behind Cypht development is to provide combined views for multiple accounts, but it's also a standard E-mail client that lets you browse and manage IMAP folders and send outbound messages with SMTP. Cypht is an application built entirely of plugins, or as we call them, module sets (which is obviously way cooler sounding than plugins), that are executed by the framework. Modules provide a flexible way to add new features or customize the program without hacking the code. Cypht is Open Source (LGPL V2), and written in PHP and JavaScript.

RainLoop Webmail is a modern, fast, and lightweight web-based email client. It supports IMAP and SMTP protocols, allowing users to access and manage their email accounts through a web interface. RainLoop offers features like multi-account support, a responsive UI, and integration with popular email providers. It is self-hosted, giving users control over their email data.

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 version: https://sourceforge.net/p/nocc/code/HEAD/tarball?path= Questions, bug reports or support requests are very welcome: https://sourceforge.net/p/nocc/_list/tickets Alternative source code repository: https://github.com/oheil/NOCC

Greetings Management Interface. Felicitas allows to manage your contacts and send them programmed greetings by events. It also manages templates to automatize the greetings to send.

Modest system requirements, decent performance, simple installation and upgrade, no database required - all these make RainLoop Webmail a perfect choice for your email solution.

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

CangrejoMail it's a mod of the popular webmail "SquirrelMail". All the html code has been changed to XHTML, this way, all the interface is handle by CSS with the possibility to work with themes.

Nice looking captcha plugin for Roundcube webmail.

GMailSite es un script que permite que uses tu cuenta de correo de GMail para crear una página en la cuál se publicarán todos los archivos adjuntos de tus mensajes que esten guardados bajo algún label en tu cuenta de correo.

Kolab-webclient\'s aim is to give groupware functionality to a webclient by using Horde Application frame work and Kolab server.

PHP functions and classes to add a Domain Key Identified Mail (DKIM RFC 4871) signatures to emails sent by PHP. It is based on the openssl extensions of PHP. It can generate DKIM signature but cannot verify them. Developped and tested on PHP 4.0.

eGroupWare integration for the RoundCube Webmail client. Our goal is to incorporate RoundCube Email in to eGroupWare for use in a corporate setting to replace the standard feLaMiMail eGroupWare client. works with EGW 1.8.002. Best way to get the latest copy is always to go right to the Git hub and download it that way. git clone git://rcforegw.git.sourceforge.net/gitroot/rcforegw/rcforegw

This plugin will add to the AJAX Webmail RoundCube the ability to tag mails like it is done in Thunderbird. He will follow the same semantic as Thunderbird to manage tag, so tags set using this plugins will be seen in Thunderbird and vice-versa.

a webbased desktop, which handles modules like email-app and so by a webclient. Today only for Mozilla like Browsers. Tester/Developer are welcome :) Check it out on http://x.nebulon.de/netdesk/

Touch Mail is a webmail system tuned for the Iphone/Ipod Touch. With Touch Mail you can use any email service like Yahoo! Mail, Gmail, AOL that provides the POP protocol access. Written in PHP5 does not require any database support.

6XMailer is a PHP POP3 mail reader with support for HTML mail, MIME attachments, embedded mail content, multilingual ready, and themes. It has an address book and centralized configuration file.

AVA SBS is a collaboration of Open-Source software designed to give small businesses a cost effective server solution with Enterprise capabilities. AVA-SBS gives business an easy to administrate Primary Domain Controller, Print Server, File Server, Email

AfterLogic WebMail Lite PHP is a free AJAX webmail application. Users can receive, view, manage, compose, and send email through web interface (IMAP and SMTP supported). Source code included.

Webmail client for call center agents. Designed to efficiently manage and report on a large number of emails to a small number of email addresses. Specifically designed with webforms in mind where one email address may receive over 1000 emails per day.

php/MySQL based webmail program. Currently only supports pop3, IMAP is in the works. Has a notebook, a favorites organizer and an addressbook.

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.

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

BlogMail software is a CMS and a Webmail application integrated in one. It's based on WordPress MultiUser and has all the functionality of this, like RSS and comments, plus support for LDAP, smarty templates, automatic subdomains and antispam filtering.