ability to message inactive friends via lodestone

I would like to see an option to mail friends via lodestone (lodestone moogle mail?) inactive or active , and they would get a email from SE that someone has left them a msg. so they can login to lodestone and view such msg. i've seen other posts with people asking for this kind of option , today i really know how useful it would be , there is a 4 day free play this month, and some of the friends i played with i don't have any contact way to try to persuade them to play again ,or just to see how life has been. all so would be a good way to msg. people you had a great dungeon run with but the're on a different server.

blog option is useless btw ,many don't set it up