M2 is the internal name of the email client and news client built into the Opera (web browser) web browser, officially simply reffered to as Opera Mail . Its interface is somewhat different from many other email clients, to provide better integration into the Opera internet suite. It has excellent spamming filtering (both automated and learning , i.e. Bayesian), supports Post Office Protocol and Internet Message Access Protocol, newsgroup as well as RSS (protocol) and Atom (standard) newsfeeds.

What makes M2 different from other mail clients is that it uses only one database for all mail, and sorts the messages automatically into several views or accesspoints. The main database can be accessed by opening Received , examples of the views are the mailing list views which hold messages sent to mailing lists, or user created filters. Messages with attachments are automatically added to an attachment view. This approach makes searching in M2 extremely fast, and also makes it easier to find an individual message, as mail can belong to several views without having to be copied. For example a message sent to a mailing list with a word document attached will appear in the Received view (the main database), in the Documents attachment view, and in the mailing list view for its mailing list. Additionally this message may belong to one or several user created filter views.

Associated with M2 are Opera s contact manager and assorted personal information manager components, a simple Internet Relay Chat client, and a notes panel. The IRC client allow users to connect to multiple servers at a time, giving access to thousands of public chat rooms. It is also possible to chat in private and to transfer files between users. The chat rooms appearance can be modified by modifying a CSS file ([http://home.no.net/polynar/opera/v7/custom/custom_chat.php demonstration])

M2 supports both RSS (file format), and in version 8, Atom (standard) newsfeeds.

M2 can display text and HTML emails and uses the Presto (layout engine) layout engine to display HTML. The browser/email client is available for all platforms the browser is available for, including Microsoft Windows, several specific Linux distributions, and Mac OS X.

=See also=

*List of email clients *List of news clients *Comparison of email clients *Comparison of news clients

=External links=