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Opera Mail (formerly known as M2) is the email and news client developed by Opera Software. It was an integrated component within the Opera web browser from version 2 through 12. With the release of Opera 15 in 2013, Opera Mail became a separate product and is no longer bundled with Opera.〔(Opera Desktop Team - Opera Mail )〕 Opera Mail version 1.0 is available for OS X and Windows. It features spam filtering (both automated and Bayesian), a contact manager, and supports POP3 and IMAP, newsgroups as well as Atom and RSS feeds. Opera Mail uses one database that keeps an index of all mail, and sorts the messages automatically into several "views" or accesspoints. Messages are automatically sorted by type, such as mailing lists, and mail with attachments . This approach to indexing allows for quicker access to messages. For instance, a message sent to a mailing list with a word document attached will appear in both the "Documents" attachment view and in the "Mailing lists" view. Opera Mail can also use Bayesian filtering to automatically sort messages into other views. All messages in the database are accessed by opening the "Received" view. The integrated mail component included a simple IRC client, but this is no longer present in the standalone program. The IRC client supported multiple servers, file transfers, and interface customization through CSS. Opera Mail can display text and HTML emails and uses the Presto layout engine to display HTML. With the release of Opera 9.5, Opera Mail featured a new backend to increase speed and extend IMAP support.〔(Opera Watch Interview with the lead developer of the Opera Mail Client (M2) ), URL accessed on July 11, 2007〕 As of Opera 10, it includes message composing with rich text support and inline spell checking.〔(Opera 10 Beta 1 for Windows Changelog ), published on July 3, 2009, URL accessed on July 7, 2009〕 ==See also== *Comparison of feed aggregators *Comparison of Usenet newsreaders 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Opera Mail」の詳細全文を読む スポンサード リンク
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