Mail Act-On is a plugin Apple's Mail (Panther & Tiger) in that allows you to map specific mail rules or actions to "Act-On" keys.
What's new in this version:
[OS] Fixes compability for internal changes in Mail in OS X 10.10.3
[IMP] Displays more relevant version information for beta and bugfix builds. [IMP] Version information in preferences can not be selected and copied.
[IMP] Adds preference setting for always display number keys as digits (on certain keyboards, the number key is a shift modified keystroke. This setting will show the keystroke as the digit rather than a shift-modified key).
[FIX] Forwarding or redirect...