I've done some testing and am not seeing emails being sent to other users. What I am seeing is the names in emails being rendered incorrectly in the emails that are being sent.
font-family:"Tahoma","sans-serif"">From:
font-family:"Tahoma","sans-serif""> tickets@domain.tld
Sent: Tuesday, February 25, 2014 1 PM
To: Laurel Lefavor
Subject: Re: Laurel's PC
-- do not edit --
Dear
Laurel,
Janice just logged a message to a ticket in which
you participate.
The person who logged this message to the ticket was Pat . And when Laurel added a comment Pat got one saying that Kirby logged a message. Both Pat and Laurel are Collaborators on the ticket which was opened by someone else. Janice and Kirby are other clients in the system.