> As for familiarity, you wouldn't test current Gmail users against a new interface. Of course they would perform better against the old one. You'd get a group who'd never used either one and run your tests (unless you're incompetent).
Everyone has used email at this point except babies and tech averse grandpas, and all clients look more or less the same, i.e. like old gmail.
Everyone has used email at this point except babies and tech averse grandpas, and all clients look more or less the same, i.e. like old gmail.