Your invitation came with a response postcard—with the postage already on it and everything! No need to slip it in an envelope, just drop it in the mail once you’ve filled it in.
We’d love a response from you by April 15.
Don’t forget to mark any dietary restrictions you have, as it’ll help us set our menu, and will also help us work out some logistics for feeding the otherly-dieted.
If you’ve, uh, misplaced your rsvp card, that’s okay. Just send an email to firstname.lastname@example.org.