Earlier quoted context omitted.
Progressive consent makes sense though: in starting out with an app that i have no previous trust relationship, "Hide my email" sounds like a good idea in a trial balloon. If after using the application it tells me that to better use its collaboration tools it would like me to consent in giving a more direct email address, I might change my mind given changes in trust relationship (I have been using this app for some…
I like this approach. And giving users that progresive consent is smart. If I open your app and am greeted with "You need to give us your email to get the most out of our app" then I'll be upset as that is user hostile. But If I click a share button and am told "In order to make it easier for people to send you things, would you provide your email" and being able to dismiss that and continue to use the app and all of…
(ETA: They make an okay follow up point that someone accepting an invite link sent to a different email sends a signal that they could just go ahead and link that email address directly to the account, and don't see why you wouldn't just give them that email in the first place. But in addition to being a squicky privacy faux pas to automatically link any email to an account without direct user consent, there are plenty of reasons to send emails to an address only indirectly linked to a person and/or that a user would not feel comfortable directly linking to an account. It's a somewhat flimsy argument below the surface, I think.)