Thanks. In that case, I'm confused on why do y'all choose to emphasize email that much in your product's introduction (you even have the word "mail" in your product's name).

Email is like one of the most common used identity, if not "the" most common used one, for web/cloud services. It's used as identity for roughly half of services in the wild, yet they don't put email/mail in their names, or emphasize that they are email alternatives.

You said emails are not the _core_ mechanism within the app. Maybe besides using them as identities, you also use emails for other, "non-core" way? Can you clarify on that? Maybe it's only me but it really confuses me that you emphasize email in such a way but only use them as identities.