That's a pretty cool idea! I don't know how many people would use it, but I'd love it if it were widespread. (I have too many 6xxxxxx.pl files in my PM directory.)

Might I offer one suggestion?

If someone codes that up, it would be pretty nice to have the option of having the first few words (less Re:...) of the title. It would make it easier to recognize 'em in my directory.

Of course ... I'm not sure that having a directory full of names like PLZHelpMe.pl, UrgentQuestion.pl, WhyshouldIuse.pl, etc. would be any better than numbers. At least with the numbers, you can put 'em in mostly chronological order.

...roboticus