AfterLogic XMail Server is a family of mail server products for Windows, Linux, Unix. It includes a commercial edition, XMail Server Pro, and open-source GPLv2 edition, XMail Server Lite. These products are being developed by AfterLogic Corp. on the basis of XMail by Davide Libenzi. Main features This software includes a mail server supporting SMTP, POP3, IMAP (IMAP in Pro edition only), a web administration panel and webmail front-end which supports ajax, and a set of additional modules which include spam filter, anti-virus integration, etc. Technology The mail server is written in C/ (cross-platform). Web part (the webmail client and the web administration panel) is written in ASP.NET (Windows edition) and PHP (Linux edition). XMail Server Pro uses database backend (MS SQL Server, MySQL, MS Access supported) to store domain and user settings for webmail access. E-mails are stored on the filesystem as .EML files. Comparison of open source and commercial editions Commercial edition XMail Server Pro supports IMAP protocol and provides webmail front-end with more features, including folders, calendar, address book, rich-text editor and personal settings per user. Extended functionality of the webmail front-end uses database backend to store data. Open source edition XMail Server Lite does not use database backend. Source code is provided in both commercial and open source editions for most components except of IMAP server which is closed source.
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