Messages
The in-game mailbox keeps short player messages separate from live chat.
Sending a message
Community → Messages opens the mailbox. A message can contain up to 100 characters. The documented send cooldown is one message every three minutes per character.
Inbox and retention
The Received tab marks unread messages with a plus symbol. It stores up to 30 ordinary messages, excluding system messages such as invitations.
Received and sent messages are automatically removed after 30 days. GM Messages has a separate tab for administrator messages.
Checking limits
The official guide also lists a 20-message cap without specifying its reset period. Players should follow the current limit shown in the game.