Try this
- Read the destination name and participant list in the actual application. Check attachments as well as the message.
- Remove details that are not appropriate for that audience, or choose a private channel with the intended person.
A worked example
“This version is for one person. I’ll move it out of the group thread before attaching the note.”
An invented example to adapt, not a real exchange or a script you have to follow.
Before you leave it here
Do not rely only on an avatar or a recent conversation’s position in the list. A deliberate recipient check is especially useful after switching accounts or devices.