We mailed our international invitations recently, because we wanted to give guests plenty of time to book hotel rooms. Most of them went to Mark's friends and family, and we used online RSVPs as well as a telephone mailbox we set up through Google Voice. We were a little concerned about some of the older folks from overseas that don't have internet and don't usually make international calls.
However, the "no" RSVPs started rolling in recently, via the mail. It turns out that they make cards for this:
I had no idea they made cards for this - I'm guessing maybe in the UK, sending out an RSVP card isn't as common? I don't know.
We also have gotten a few really lovely notes:
So it turns out that if people want to RSVP by mail, they will find a way, and that by not just giving them a little card to check off, we've gotten some really wonderful sentiments from family and friends. These two are actually people I have never met but they are nonetheless so excited for us, which is very heartwarming.
UK folks, is this actually a thing? Has anyone else run into this? 
