I get what you're saying, but regular people have no idea what the difference is between a mail client, GMail, and something like Mailbox. It's just "the thing

I get what you're saying, but regular people have no idea what the difference is between a mail client, GMail, and something like Mailbox. It's just "the thing I use read my email". That was the thinking behind the statement in the first place: we let you check mail in all your accounts, unlike most alternatives consumers use.