Every single other MMO I've played, allows you to send mail between your own alts, guildmates, as well as friends list. This one? No and it's absolutely the most annoying thing ever to pick up an item one character needs on another character and not be able to send it to him/her.

The excuse that its to prevent RMT is not valid because we're talking about alt characters on our OWN accounts. If I'm logged into the game then no RMTer is going to be logged on at the same time on my account...hello?