Even if Google Inbox were asking for full permissions I'd be extremely sketched out about that, but it wouldn't happen because Google developers are, by and lar

Even if Google Inbox were asking for full permissions I'd be extremely sketched out about that, but it wouldn't happen because Google developers are, by and large, on top of things. A third-party company, even with significant investment and history with Alphabet, requesting full access to my Google account despite needing ZERO access (i.e. for what they need, requesting no permissions would suffice) is sketchy and inherently untrustworthy.