You're thinking of the + character. youremail+servicename@gmail.com will still be delivered to you. Gmail ignores dot characters. y.o.u.r.e.m.a.i.l@gmail.com i

You're thinking of the + character. youremail+servicename@gmail.com will still be delivered to you. Gmail ignores dot characters. y.o.u.r.e.m.a.i.l@gmail.com is equivalent to youremail@gmail.com