Opera Mail is a lightweight email client designed to work alongside the Opera web browser or as a standalone email solution.Installation is fast, it has a ton of features and just works really well. The interface follows the familiar 3 panes side-by-side look but with just a quick click you can change it to a dual-pane or three-pane with the left side being top and bottom. See our screenshots for more on that.With competition from Outlook, Thunderbird and web email this one is often overlooked. If you need a desktop email client then you might want to try this one out. I'd prefer a portable version, and while one exists with Opera@USB, it is unofficial and often many months behind the official version here.Opera Mail Features: Tabs allow you to view multiple emails messages at one time and navigate between them. Threads help you organize your mail. Keep up with the context of any mail thread, and view previous messages in any conversation you're having. Labels allow you to sort messages. You can set simple rules to sort mail automatically. Opera Mail has a built-in RSS feed reader to keep up on your favorite sites.