Thunderbird cheatsheet
Whether you’re a hard-core Thunderbird user or, like me, just dip into Thunderbird from time to time, you will benefit from Leslie Franke’s Thunderbird cheatsheet.
It’s hard to keep all those shortcuts in your head, so a single page that sets them all out by category is a great tool:
You can view it 
as a web page or download the PDF.
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September 19th, 2006 at 6:57 pm
[...] You can add it to the Complete Google Apps Cheatsheet, the Thunderbird one, the Entourage cheatsheet and the complete list of Apple Mail shortcuts for a large amount of things to wrap your head around. [...]