Receive your rewards
A reward waiting to be claimed is different from an item already in your inventory.
Check the mailbox
Use the mailbox feature when it is offered by the current game flow. Review the reward, then claim it into an eligible inventory. Leave enough space and weight capacity for the items.
If a claim cannot finish
A full inventory, changed inventory state or a conflicting claim can prevent receipt. Read the message, free capacity if needed, and check the latest mailbox and inventory state before repeating the action.
An interrupted response does not prove the reward was lost or unclaimed. The server’s grant and receipt records determine completion. Do not try to create a duplicate reward to work around an uncertain response.
What belongs here
The mailbox is intended for system rewards and supported return paths. It is not a general player-to-player item transfer service. Some recovery integrations, including facility returns, remain separate implementation work; not every leftover item automatically appears as mail.