Does Tim Cook Really Open Public Customers' Emails?
Yes, Tim Cook does open and reply to customers' emails.
In the morning, he somtimes looks at the App Store statistics; Tim has an excellent view of what the World is doing on Apple devices.
This gives Apple the best information for Worldwide priorities for developing features and services.
Tim does look at customer emails but there must be so many of emails he requires a team. He responds to a few customer emails some of which have been simple Mac mini update requests and other emails have been ideas.