From Ymirheim Wiki
Active Structures are in-game objects the players can interact with.
- Quest boards. The players can look and sign up for repeatable quest here. Quest boards are located across the game world.
- Mailbox. The players can send and receive parcels and messages via mailboxes, which are usually located near a post office. Each player has its own mailbox. The maximum number of messages a mailbox can contain is 30, which means if the mailbox reaches the limit, it can't receive any more message. Items and money can be sent through the mailbox. Messages sent by mistake, can be canceled.