Pushing events to the confirmation message (yellow drop down banner at top)
I believe someone suggested look at this in the past to remind users of tasks or things. I am not looking for the banner message which I used for system announcements. I am looking to have the yellow banner message ping users perhaps when they log in. I am not sure that's a triggerable event.

Is this documented in Customizer's guide and if so, under what search terms? Is there a better mechanism? I can see this working to appear when the user logs in or at a certain time of the day. I am holding just sending an email in my back pocket.
Example:
"You have X tasks in your queue that need attention and XX tasks are past due"

