miment 4

Urgent means that it should be handled quickly. Important means that I regularly need it, or I may need it in urgency and thus should be easily accessible. Archived means that I have no immediate or planned use of it, but I should still be able to find it somewhere in the future.

says https://kerkour.com/urgent-important-archived

You first have to know what you're (supposed to be) doing before deciding to work on your inbox. If you don't know what you should be doing at any time, all ideas and items in your inbox may look important and the decision will only be made by their urgency.