It can be a fun story about how you two didn’t like each other at all when you met and now do, or something sweet about how great the couple is together. Know your audience: if this would play well, totally include it. If you’re not sure if it play well, I cannot repeat enough: SKIP IT.
Forewarning: all correspondence will probably include a lot of punctuation and emoji (!!! You all look lovely/foxy/badass and it’s been fun/an adventure/unforgettable hanging out with all of you. Stephanie is a photographer, writer, and Ravenclaw living in California with her family. For example, a broad joke at the expense of your friend is probably fine (“We all know George loves his truck, so it’s a testament to how great Lucy is that you are not listening to me give a toast congratulating George and his truck on a happy life together”), but a very specific joke that no one else will get is not okay (“Well there was this one time we were all in the woods, and it was Steve’s birthday, and so we got him an ice cream cake and he got terrible diarrhea and pooped outside.And well, he’s a good guy, and he’s my best friend, even if he pooped that one time”).