We are planning to use a wedding photo of us holding a thank you sign and printing it as postcards for our Thank You cards. I wanted to send a card to everyone on our list, even those that could not attend. Some of the people who don't attend may not send gifts (which is totally fine), is it weird to send them a "thank you" card? Should we have a different set of postcards for these people? I don't want to seem like we're trying to remind them they didn't send a gift...