For those of you using the Mac mail program out there, you may want to check out this housekeeping trick. Basically, it cleans up the inbox database, which can become fragmented from extended use. I don’t have any hard evidence to prove things are faster, but things do feel a bit more zippy when I’m navigating my mailboxes.
Actually, as I work with Mail more, it is definitely a lot faster. It used to take 10 seconds to startup, now it pops right up in less than one.