Same account sending

[Secondplanet]

I was just wondering why is it that we can't send the black belt items to other characters of the same account? I guess the page i bookmarked to tell me what i can and cannot send is out of date but i fail to understand why i can't send it from my one character to another.

Meanwhile i can send abjunctions, 24hr NM drops and other stuff that wouldn't make sense.

*Edit* Just checked and i can even send gear you get with plasm through the delivery to my other characters, and those require a KI to get.