Tired of pressing F8 to open the Message Pane?
Message Pane Button is a very simple Thunderbird add-on which adds a button to open or close the Message Pane, without extra buttons you do not want or need.
After installing and restarting, just need to Customize the toolbar and then drag the icon/button to the toolbar.
Message Pane Button is cross-platform and it works on Mac OS X, Windows and Linux.
· Thunderbird 2.0 and later
What's New in This Release: [ read full changelog ]
· Updated Max Version Level to 20.