[MlMt] how to change the standard "from address"

[Sebastian Poll]

Hi,
I know that mailmate chooses the "from address" depending on prior 
mails. But what bothers me is that it always chooses my personal mail 
address instead of my work address when opening a blank mail without 
anything in it. Sometimes it works but mostly I would like to have the 
work-mail to be standard.
Is there any way to do so?

all the best,
Sebastian