Gmail Feature: Extensive Search
How to get it to narrow down the search to just the messages that are important to you.
Let’s say you need to find all the read messages in my Primary tab that were just about my “floridify” label and as I marked informational with blue info icon.
Search Syntax combination would be is:read in:inbox category:primary has:blue-info label:floridify
How to search in your inbox Primary category only: in:inbox category:primary