Appearance and Customization
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Priority Switcher
Change priority of the received messages from the toolbar button and the context menus...
Mark All Read Button Requires Restart
Adds toolbar buttons to Mark All emails as Read, Mark Thread as Read, and Goto Next Unread Thread.
Exit Button Thunderbird Requires Restart
Adds a toolbar button to exit Thunderbird. Go to View menu, Toolbars, Customize... and drag the icon where you want...
Maximize Message Pane
Maximize message pane by collapsing the thread pane. You can read a message in larger area without opening a new message window...
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