Printing addresses on outer envelope...

Is there somewhere I can go to do this besides getting it done through the invitation company? I would prefer not to do it myself at home because I jammed a lot of envelopes for our STDs! TIA!

ETA: We want the printing to go directly on the envelopes, not on labels.

Michelle Clark is amazing. You should use her and she's quick and not expensive. My guests loved the calligraphy she did.
I can't find her contact info though at the moment.