Not sure how I want people to RSVP...I know typically people will self address and apply postage to the response card but I wonder if giving people the option to email or call to rsvp might be helpful with compliance. I dont want to spend all that money on postage if people are just going to rsvp by email. I have heard of several weddings lately where guests weren't rsvp and I was wondering what is the best way to get people to comply