Hi all, Here: https://github.com/OTRS/otrs/blob/bc9684d6e8baad693a8dada859b8f20af6cbcfff/K... In Kernel::System::Ticket::Article there is this code: if ( $UserData{UserSendFollowUpNotification} && $UserData{UserSendFollowUpNotification} == 2 && $Ticket{OwnerID} ne 1 && $Ticket{OwnerID} ne $Param{UserID} && $Ticket{OwnerID} ne $UserData{UserID} ) { However the default preferences only allow UserSendFollowUpNotification to be 0 or 1 (or undef when not set). Is this some undocumented feature? Or simply dead code that can be removed? The code seems to come from 2005 originally: https://github.com/OTRS/otrs/commit/777b9c8225aeffd90bb7b3cef012cdd2ecbf798b