I got Supernatural on Tuesday, and yesterday I finally got around to marrying off a couple of my Moonlight Falls sims. A little while later, the mailbox gave them the option to write thank-you notes for wedding gifts that they hadn't actually received.
I know this has been broken since Showtime, but geeze, I'd think they'd have fixed it by now! We know they know about it.
(Yes, I know I can use a money cheat to give my newlyweds funds, then buy them stuff and pretend that those things were wedding presents. But seeing what people sent is more fun than having the stuff; for me, it's the whole point, really.)