A stamp is a virtual item on SLOWLY.
You will need at least one stamp to send out letter.
There are a 3 different kind of stamps on SLOWLY:
- Location based - Open the app and automatically unlocked based on your geo-location.
- Achievement - Unlock hidden stamp when you achieved a certain milestones, requirements are hidden so you'll have to try it out :)
- Limited - Sometime when SLOWLY launches a new feature, open the app and you will get it.
P.S. We are working on a In-App Stamp Store at this moment, please stay tuned.