I'd put this mailbox out on a table at the reception to see what people write.except my mailbox would be much cuter.and painted to match ;) mighttt even use it as the official mailbox of my first home!
I love this idea. An envelope guest book. You just take a store-bought scrapbook/album and glue envelopes into it. Lay out colored pieces of paper for guests to jot notes down on, and then they can place them in the envelopes.