# All introductions should be double opt in See: * [[titusMoreContinuingArt2021]] * [[wilsonDoubleOptInIntroduction2009]] [Web URL for this note](http://notes.benjaminreinhardt.com/All+introductions+should+be+double+opt+in) [Comment on this note](http://via.hypothes.is/http://notes.benjaminreinhardt.com/All+introductions+should+be+double+opt+in)