Default save hook

[Timothy Ball]

 I've read the docs maybe I'm just dumb but how do I make
 a default save hook? I'd just like it so that when I hit
 "s" email gets saved to =default. And if I send mail I'd
 like the mail to goto =sent-mail...

 I've read the various .muttrc examples and I just feel
 really dumb.

--timball