How To Write A Return Address On Save The Dates . Address the save the date with both of the couple's names. Don’t send electronic save the dates. Return Address Stamp Wedding Invitation Stamp Save the Date Stamp from www.stampcustoms.com There are a few different ways to address wedding save the dates when it comes to families. Address the guests with “mr.,” “mrs.,” or “ms.”. Spell out the addresses completely (write out “street” instead of writing “st.”)