moving to Mutt from Gmail

[Scott Jones]

I have MUTT set up and working on my system. I don't use it though 
because 1) the inbox is stuffed with several THOUSAND message through 
which I need to sort and delete the spam and 2) I haven't yet figured 
out how to set up SpamAssassin to filter the junk out. My question: can 
I just copy the current inbox to a backup file and start fresh, after 
getting SA set up and trained, so that I can get all my mail from MUTT? 
I like the GUI nature of gmail but I can live without that if I can set 
up MUTT to have the appropriate programs invoked for various content 
viewing/playing.

Please advise!
Scott