View someones facebook messages

What ways exist to view Facebook messages if the account owner shares them — and what shows in the logs?

Step-by-step:

  1. If owner shares messages: They can use Facebook’s “Download Your Information” tool or forward/screenshot messages directly.
  2. Log activity: Facebook logs messaging activity (sender, recipient, timestamp), but not content unless shared.
  3. Shared method logs: Forwarded messages or files appear in standard logs as sent by the owner to your account; no special log entries beyond normal messaging activity.