[MlMt] opening msg by keyboard

[Benny Kjær Nielsen]

Is it possible to change the key opening the selected msg from return
to space?
I use right hand for the mouse, and I am a mousy person, so the return
key is not practical for me.

If you use custom key bindings in MailMate then I believe you can just
add this:

" " = "openMessages:";

But you'll lose scrolling using the space key of course.