I stopped playing for about a year and now I've started up again. I feel like I remember if I got a promethium lockbox style then I could mail it to another character on my account. Can we no longer do this?
i don't think you were ever able to mail lockbox styles. you can put it in your shared bank for other alts to use.
I don't remember ever being able to mail any "account bound" items just the option to place in the shared bank section.
The only styles that can be mail out, would be the new 52 styles. Since those can be put on the auction house.
The original lockbox styles, Stalwart Defender, Daring Vigilante, Cybernetic, Master Mercinary, Lethal Zealot, and Noble Warrior are trade bind styles meaning you can send them by mail and sell them or buy them on the broker. Other styles are account bound meaning you can trade them through your shared bank only.
What she said^^^^^^ those are the off orange colored icons. The account bound ones are yellow colored icons.