These are the mail commands, which allow you to send messages to other players even when they're not online. Mail is very important, as you can send messages to people when you don't have contact to them. You can also use this to keep notes to people. 

  • /mail read- Check your mail.
    • /pm - alias for /mail.
  • /mail help - Get usage information on the private message command.
  • /mail send player message - send message to player.
  • /mail next - shows the next unread message.
  • /mail r num - shows message number num.
  • /mail d num - deletes message number num.
  • /mail l [num] - list 8 messages starting from 1, or optionally from num.