webmail 程序

1.http://www.squirrelmail.org/，
下载地址： http://sourceforge.net/projects/squirrelmail/files/stable/，
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.

Installing SquirrelMail

from http://www.squirrelmail.org/docs/admin/admin.html

2.http://roundcube.net/
下载地址： http://sourceforge.net/projects/roundcubemail/，
Roundcube Webmail is a browser-based multilingual IMAP client with an application-like user interface providing full functionality like MIME support, address book, folder manipulation, searching and spell checking. It's written in PHP and JavaScript。

3.http://www.hastymail.org/
下载地址： http://sourceforge.net/projects/hastymail/，
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.

4.http://www.horde.org/apps/webmail
下载地址： ftp://ftp.horde.org/pub/horde-webmail/horde-webmail-latest.tar.gz
安装指南：  http://www.horde.org/apps/webmail/docs/INSTALL
from http://www.horde.org/download/webmail

相关帖子： http://briteming.blogspot.jp/2012/12/5-php-ajax-webmail.html

http://workaround.org/ispmail