Um. The github link that you mention is closed, and resolved for 1.9.4rc2 in Dec 2014.Maybe you mean this one?https://github.com/osTicket/osTicket/issues/2201That thread indicates that the problem is when Redactor saves the variable, and it is suggested that you "manually edit email templates in the database and add this variable directly in ost_email_template table."Personally I still use %{ticket.client_link} because I want people to have to log in.