Email is excellent for durable conversation
If the note belongs in a documented thread or needs to stay attached to a full decision trail, email may be the correct choice.
Private note links help with temporary details
If the message is a short code, callback instruction, or one-off credential, a private note link can be cleaner than putting the text directly into the message body.
The best choice depends on the job
Use email when the communication itself matters. Use a private note link when the content is brief, temporary, and better kept out of routine message history.