Note: This page is based on an assumption referencing Animal Crossing: New Leaf since the Animal Crossing mobile game is not released yet. Will be updated once the game gets available!
You can write letters to your villagers by using a stationery paper. Nookling store offers a variety of these items. The majority of these costs 160 Bells, except for the elegant paper. It will cost you 800 Bells. Once you have upgraded your Booking Store to Super T&T store, you can purchase the melody paper for 500 Bells.