<p>If they do not supply contact information in their profile, then you cannot contact them privately through this site.  SE does not work that way.  We respect our users' wishes to remain private.</p>

<p>If you think there is an emergency--for instance, if a user might inadvertently have posted sensitive information and you wish to warn them--then please just flag their post for moderator attention.  When you raise the flag you will be able to explain the reason.</p>
