Start with the part that is verifiable
Separate the event you can describe from the motive or reaction you are guessing. For a message about how to send a final notice before blocking someone, use this factual base: identify the content, account, place, person, channel, access, or behavior that must stop.
Make one answerable request
Give the recipient one concrete question or next step instead of several emotional jobs at once. Give the required action, any lawful deadline, and the one permitted route for necessary matters. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Leave the recipient in control
Do not debate the boundary repeatedly or threaten consequences you are not entitled to use. Save evidence, secure accounts, reduce access, and contact platform, workplace, legal, or emergency support when risk continues. A clear message remains useful even when the answer is no or no answer arrives.