I'ts a virtual post office for your server!
For PocketMine-MP: 1.4
Send each other messages, even when the other person is offline. View your messages anytime, and clear them with a simple command. Tells you how many messages you have when you login. Customizable message to new players!
/mail read - Show the messages you got. /mail clear - Clear your list of messages /mail send <player> <message> - Send someone a message /mail sendall <message> - Send everyone a message