
Describe what you share
Examine content, profile, links, location, time and mentioned people. Define the intended audience before format. A private post does not promise recipients will not copy it. Separate public distribution and group-only details rather than rely on one general setting.
Check the actual context
Consult documentation for the actual space: personal conversation, channel, room, activity or video. Test a non-sensitive post with an authorised person. Correct older posts where possible and note limits involving external copies. An “open” label describes technical organisation, not a privacy guarantee.
Your reading path
Useful comparisons
Profiles to explore options
These links offer relevant leads for this topic; they are not a ranking or universal recommendation.