From my research:
Code:
MsgMailOperation (id: 1045)
int32 Action
int32 Id
Code:
MsgMailList (id: 1046)
int32 Action
int32 TopIndex
int32 Amount
repeat (Amount)
{
int32 Id
string[32] Sender
string[32] Subject
int32 Money
int32 EMoney
int32 TimeLeft
int32 ItemId
int32 Action
}
Code:
MsgMailNotify (id: 1047)
int16 Action
Code:
MsgMailContent (id: 1048)
int32 Id
string[256] Content
Disclaimer:
These structures are about 10 months old (or more), so they might have changed.