As I archive emails in bulk, despite trying to mark them all read first, I accumulate stray unread emails in "All Mail". When I search for unread emails, it only searches within the range of ONE page of a huge paginated list.

When I search for Unread emails, I want the RESULT SET to be just the unread emails from ALL MAIL.

The only way to reset those to remove the count is to go page by page by page.

I miss the feature in gmail to search, find, and act on such things.