[GameMaster]

Do both DS units have to be on to receive a message or can a message be sent and received later like e-mail? Because obviously everyone has different schedules and stuff and it would just seem kind of pointless if you could only send messages to each other when you're both currently using your DS's. One of my friends lives in a different time zone so we're sleeping at opposite times. So if I sent a message to him while he's sleeping, and the next morning when he boots up his DS, will the message come in?