SquirrelMail is a standards-based webmail package written in PHP4. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in pure HTML 4.0 (with no Javascript) for maximum compatibility across browsers.SquirrelMail has very few requirements and is very easy to install and configure. SquirrelMail has a all the functionality you would want from an email client, including strong MIME support, address books, and folder manipulation.What's New in This Release: [ read full changelog ]· Of those new fixes and improvements not included in our last release candidate, the most notable fix is that for the formerly broken search page, but we've also fixed sorting in the Sent folder, handling of complex mailto: addresses, display of multibyte subjects, quoting of encoded headers, automatic installation address detection (especially useful for lighttpd environments), a privacy issue related to DNS prefetching of email content, and added unread links in the message view and a Gmail IMAP configuration option.