Shinobi Mailbox
The Shinobi Mailbox is a mailing system integrated into the game. It is located at the top right-hand side usually (depends on what template you are using). In the Mailbox, you will notice
Inbox Write Mail Archive Mail Notepad Outbox
The inbox is the place to read new messages (once you recieve a message, the "Shinobi Mailbox" in the top right corner will light up and show something like: Shinobi Mailbox: 1 New, 10 Old). To read a message, just click on that message. You may then reply at the bottom of that message box. Also in that message box is one of the ways to delete the message (just click delete to delete that message), the option to forward the message to someone else, the option to mark it unread (which means it'll still appear as a new message- handy for messages you'll handle later), and the option to report to an admin (you should only do this if they are breaking the rules, causing trouble, etc. This is not to be used for fun).