We sent our invitations out 3 weeks ago and have heard from 3 good friends that they have not gotten their invitations. We have only gotten 2 invitations back in the mail and neither were from the friends who did not receive their invitations. One had the legitimate wrong address and one was sent back to us for no reason whatsoever. The only thing that we could surmise is that the postal machine could not read the FMIL's flowery handwriting.
Now I am freaked out that more people aren't getting them. Right now, we have about a 50% response rate- which is really good. Do I wait until the RSVP deadline before contacting those who haven't RSVP'd yet or should I start casually asking to make sure people received their invitations. We sent out about 135 invitations and have received 65-70 RSVP cards back. I don't want to bug people because they have another 5 weeks to get their RSVPs in, but I'm just worried that people may think they are not invited.