Delivery gift/send letter though mail box

I got gift from my friend though mailing since we live faraway then I thought what if we could send it though our mailbox like in real live that you don't have to travel to give gift hand by hand to someone that don't live nearly?
Letter is old but classic. Hey we got post card though mailbox. We send our song and book though mailbox. We could recieve gift/trash from fan though mailbox in get to famous. We could donate our knitty things though mailbox. We delivery thing though mailbox in order to finish odd job task. It gonna be fun gameplay that you send gift or letter though mailbox to your friend too. Letter gonna be fun so we could writing on off the gird (I mean writing come before electic) like typer or notebook or something classic with paper and pen (bonus to medieval gameplay, computer we got from cottage living is cutest but still wish could write during off the gird)