Say the boundary in operational terms
Name the contact, behavior, topic, access, or commitment you will and will not participate in. For a message about how to support someone affected by wildfire, use this factual base: confirm what they have shared, their current location or immediate need, and avoid repeating unverified information.
Define any necessary exception
If an exception is necessary, give it one purpose, one channel, and a clear limit. Offer one concrete resource, task, safe place, transport option, or flexible check-in. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Respond to escalation safely
Do not photograph, publish, fundraise in their name, or arrive at a crisis site without permission. Follow local emergency, evacuation, shelter, trauma, and safeguarding guidance before relying on a personal message. You do not need the other person to agree with a boundary for you to follow it consistently.