Write from facts rather than momentum
Pause long enough to remove accusations, assumptions, and details that belong to someone else. For a message about how to reconnect with a childhood pen pal, use this factual base: introduce yourself with one shared place, activity, person, or time period they can recognize.
Offer a proportionate next step
Match the size of the request to the relationship and to what the recipient can reasonably decide now. Offer a low-pressure way to confirm the connection and share a brief reason for reaching out. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Protect privacy on both sides
Do not assume old closeness, demand memories, or ask for personal details before they verify who you are. Respect privacy, identity uncertainty, and any refusal, and avoid contacting a minor without a guardian-appropriate route. Use the most private legitimate channel available and do not share the exchange to recruit support or pressure.