TLDR: How do you respond when someone says they didn't receive the invitation after they received a save the date? We were folloing up on RSVP's, and one of our guests said this. Longer Version: FI is close to the team he manages, and we included them in wedding invites. We sent save the dates to all, and didn't do any B-listing. Invites went out on time, and we didn't hear back from one of the people. In the meantime, there were some complications at work, and ultimately the person transferred to another group. DH followed up today, and she said she hadn't received invitation. He's mortified, and I'm mortified because she probably assumed we sent a save the date but then decided not to invite her after she transferred. We gave her the wedding information, and we'll send another invitation tonight first thing with a note. Any other suggestions?