It's fine, as long as you don't expect that to banish your bills.
;)

If you're afraid you might receive curses in letter-format, maybe it's actually a good idea. :D

*~*
"Does bouncing count?" - Silk, The Magician's Gambit by David Eddings

My favorite athame is a letter-opener!

I suppose it works...unless you're a gardenerian. "No! You must use the bolline to open letters or else you will unleash the forces of evil!"
___
So this is what happens when demented people play with powerful toys.