How Gmail Marks Mail Important For The Priority Inbox
Importance Markers Each email has an importance marker immediately to the left of the sender’s name in the Inbox list. It looks like a flag or arrow. When Gmail identifies a particular email as being important based on its criteria, the importance marker is yellow. When it is not recognized as being important, it is just the empty outline of the shape. At any time, you can click the importance marker and change its status manually....