Packet 0x81
Clients send Packet 0x81 to the server to send a simple mail to a recipient. The server sends it to clients to deliver the mail. Note, a lot of this packet is pretty much not understood by me, but I do know enough to actually translate messages DC<->PC enough that they work.
It seems that the game doesn't clear the entire message buffer before sending a message, so some random data (probably meaningless) ends up in the sent packet. Simple Mail packets can be shortened by the server (to remove excess garbage), and clients will still accept them.
Dreamcast Packet Format
| Bytes | Meaning |
|---|---|
| 0x0000 | Packet Type (0x81) |
| 0x0001 | Flags (0x00) |
| 0x0002-0x0003 | Packet Size (0x0220) |
| 0x0004-0x0007 | Player Tag (0x00010000) |
| 0x0008-0x000B | Guildcard Number of Sender |
| 0x000C-0x001B | Name of Sender |
| 0x001C-0x001F | Guildcard Number of Destination |
| 0x0020-0x00B0 | Message to be sent |
| 0x00B1-0x021F | Unknown |