I am exploring ways to build a tighter link with customers who download and pay for our app. What I want to do is build up a newsletter to inform users of forthcoming updates and also capture feedback and frustrations. The email addresses of users are on the goole merchant account but..
1. Is it OK to build up a database of users based on this? Of course would provide opt-out?
2. How can I download this from the merchant account to excel - the main page doesn't provide email address of users and I cant see how to add this in?