gmail also ignores dots so you can do `j.o.h.n+ycombinator.com@gmail.com` then if you get any email to `j.o.h.n@gmail.com` you can filter it Of course, they

gmail also ignores dots so you can do `j.o.h.n+ycombinator.com@gmail.com` then if you get any email to `j.o.h.n@gmail.com` you can filter it Of course, they can start stripping dots in gmail addresses too, but then they'd have to be targeting gmail specifically or they'd break for most services where dots do matter.