Why on gmail? Why don’t you develop a mail server extension service instead , dependency on Gmail is bad. The way Gmail is now controlling third party access to mailbox is really concerning.
Gmail is the mail provider that myself and James use and we were testing and solving the issue for ourselves first. Google have recently made it more difficult to get API usage approved; we had to record videos of the sign in process and justify why we wanted the read email scope etc which I think is a good thing :)
Is it good thing? Gmail will completely control your users !! and your business in a way, how is it good thing? I would not want to show google how software works with user's emails, it is not Google's property, emails belong to users.
I'm not sure I understand what you're saying. Our users already use Gmail, we just built a service to help them clean their inboxes. We'll support other providers eventually :)
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.