Photo Mail Wizard is a desktop application designed to help users to search, choose, and send optimized photos by mail. Sent photos are automatically commented, rotated, resized, and/or compressed using the user's current parameters. The selected photos files are not modified, and nothing is written inside directories where photos are searched for.
Knight's Mail is a Web mail application that uses XUL to render the client display. Its goal is to look and feel as close to Mozilla Thunderbird as possible, while maintaining the positive qualities of a Web mail client such as keeping settings on the server and only requiring a (Mozilla-based) browser to be installed on the client.
quickmail.php is a script that reads email from a mail server and outputs it in RSS format that can be displayed in a browser (as XML, using included XSL/CSS) or an RSS aggregator or as WML for use on WAP devices (mobile phones/PDAs). The output has been tested and found to be valid XSL/CSS, valid XML/RSS, and valid WML.
Gemini is an advanced, multi-platform, standards compliant, messaging and calendaring client with powerful features for managing mail and news from multiple sources. Gemini provides flexible filtering of messages and protection from junk mail, viruses, and common breaches of netiquette. It has an attractive interface which is easy to use, yet hides nothing from the more advanced user. Additional features include mailing lists as pseudo-newsgroups, message templates, auto-replies, support for multiple identities, HTML, IMAP, SSL, editing of stored messages, spell checking, syntax coloring, and encryption/signing via integration with GnuPG.
Infotrope Polymer is a fully roaming online IMAP client. You can roam with your full configuration, your addressbooks, and even your bookmarks. It's fully ACAP enabled, and will operate with or without a local disk cache, and over very narrow connectivity (like GPRS), using minimal bandwidth. It supports the majority of extensions to ESMTP, IMAP, and ACAP, whether in RFC or I-D.
Mail ConfiGuru is a standalone cross-platform tool and library that displays the configuration of email clients available to the currently logged-in user. It provides one interface to the settings of all supported email clients, which currently includes Mozilla Thunderbird, Mozilla Mail (SeaMonkey), MS Outlook, MS Outlook Express, KMail, and Ximian Evolution.
Roundcube Webmail is a browser-based, multilingual IMAP client with an application-like user interface. It provides the full functionality you expect from an email client, including MIME support, address book, and folder manipulation. High extensibility is granted by the plugin API and the user interface is fully skinnable using XHTML and CSS 2.