@matrix @rin Most sites do so; if you don't, consumers will almost always look in the wrong inbox (aol vs. Google Mail vs. Yahoo!) and try nothing else, which floods support lines.

It's not ideal, but it's one of those compromises that kind of make sense if your average userbase is middle-aged+ hashtagresist women and the guys in their sixties who creep on them, like twitter's happens to be.