Our wedding was about a month ago and we are planning to send our thank you cards in the next few days. In my opinion, thank you cards should go to people who attended our wedding (they all gave us a gift as well) and those who weren't able to attend but sent a gift.
Do we have to send a thank you card to people who did not attend, but also did not send a gift? If so, what would we say in the card? I'm leaning towards not sending these people a thank you card. Is it awkward to send a thank you card in this case?