Rebuild the missing context
Assume the recipient will not remember every date, promise, or earlier conversation. For a message about how to reconnect with an estranged half sibling, use this factual base: identify the relationship, last meaningful contact, and any conflict or uncertainty that should be acknowledged.
Say what needs to happen next
State the decision, information, or practical action you need and include a real deadline only when one exists. Offer one limited next step and make no response or slower contact an acceptable outcome. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Avoid making urgency into pressure
Do not recruit relatives, use children, invoke illness, or attach an inheritance issue to emotional pressure. Respect court orders and safety plans, and use a neutral professional route for abuse, estate, or custody disputes. Do not make the other person responsible for reducing the discomfort that prompted you to write.