Ask What information would be important enough to deserve an interruption from a pop-up?

[Dean101]

Critical security alerts, account issues, payment confirmations, or time-sensitive reminders are good examples because delaying them could cause problems. Pop-ups can also be useful for major updates that directly affect a task the user is currently completing. Tracking how people respond to interruptions helps reveal which messages are helpful and which are ignored or dismissed. Frequent closures may indicate poor timing or low relevance. Analyzing engagement patterns can guide better targeting, clearer wording, and smarter delivery.