Small Wedding Time Capsule Notes

Sorry, but yes, that would be tacky. There is nothing wrong with an intimate ceremony, but you can't have it both ways. The only considerate way to "include" people at a wedding is to invite them, not assign a writing task or ask them to send you things. It's fortunate that you didn't have a shower because it also would have been very inappropriate to include anyone not invited to the wedding.

What you can do is send wedding announcements after the ceremony. Then you'll likely receive congratulatory letters or cards, and possibly some gifts as well. But that's their prerogative.

I would limit it to any cards and letters you receive spontaneously vs. asking people to send you good wishes