All Type Computer Calligraphy

I just wanted to let everyone know that I got my envelopes back yesterday and she did a great job. I am very happy with her work. Reasonable too. $1.10 for the outside and inside envelope. You just give her you guest list and then she gives you a proof list to check. I think she is going to do my place cards too. I was just wondering, since they were done on the computer do I need to spray the envelope with something so they don't smudge if they get wet???