I am going back and forth between a traditional save the date mailed in an envelope or a postcard. I honestly like the post card option more... but now I need to decide whether or not to mail them like a postcard or mail them in an envelope to protect them. It is obviously cheaper to just mail them as a post card, but I also don't want them to be ruined in the mail. Putting them in an envelope seems to defeat the purpose of a post card though.. Any experiences or thoughts?
Also I am getting married the week before Christmas 2021, when should I send them out to ensure people can take off work to travel or to make sure they don't plan other parties or holiday celebrations?