I have found (I believe) that tagging someone in a document who is already tagged does not create a second email notification. Is this true?
For example, A document was created with team members A, B and C tagged. A few days later, updates were made to the document and the owner tagged team members A and B with questions. A and B were not notified of the new tags and they are not watchers so they did not see an update. Is this because they were previously tagged on the document?