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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.
Roundcube Webmail is a browser-based, multilingual IMAP client with an application-like user interface. Roundcube provides the full functionality you'd expect from an email client, including MIME support, addressbook, folder manipulation, message searching, and spell check. Roundcube is written in PHP and JavaScript.
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.
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Madirish Webmail is a PHP based email agent (with an AddressBook and Calendar) primarily used to access a POP3 account via the web. The system uses MySQL and PHP, and while developed for Linux, will probably work on other platforms. The AddressBook a
The goal of Buoyant Mail is to provide as fully fledged of a PHP driven mail suite as technologically possible. It will look appealing (will also be themed, so any custom look can be created) and will include a calendar and addressbook.
ABLdap is a minimalistic PHP application to edit an LDAP AddressBook. The LDAP schema used is the mozillaAbPersonAlpha, used by Thunderbird. It is intended to be a temporary tool, untill the LDAP write support in Thunderbird will be completed.
CsWebmail - yet another webmail application written on PHP for CS department of BGU university with IMAP/NNTP/SMTP support. CsWebmail includes next features: addressbook,procmail interface,backup,WYSIWYG compose,messages threading etc.
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The AddressBook is a free, open source address management system, utilizing the combined power of PHP scripting and MySQL databases to provide a flexible, robust system allowing users to add a virtually unlimited number of addresses and other info.
TFAB is a web-based shared addressbook. Integrated with your default email client, sending emails from TFAB is a snap. TFAB displays natively in MS Outlook and is platform independent.
txtSQL MailBox is a pop3 mail fetching script to check/send email, maintain an addressbook and connect to any number of pop3 servers in one place. This is a conversion of phpMailBox to use the flat file txtSQL system instead of MySQL.
phpMailBox is an easy to use pop3 mail fetching script, that you can easily add to your site to allow your users to check their email, send new messages, maintain a addressbook and connect to any number of pop3 servers to download emails at one place.
Diom Webmail is a webmail client written in PHP to interact with an IMAP server. Diom Webmail is easily configurable, with common features like sending and recieving messages and attachements, as well as an addressbook, and spell check.
A web-based e-mail addressbook, written in PHP and MySQL, and designed to interface with your default e-mail client. It has a clean, easy-to-use interface, stores addresses in categories, and allows users to easily compose mail to multiple recipients.
YANOCC is a simple and fast webmail client which can handle POP3, SMTP, and IMAP servers. YANOCC is based on NOCC's code and is written with PHP4. It features multi-language support, MIME attachments, displays HTML messages, addressbook, folder 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 addressbook and centralized configuration file.