When a contact is enrolled into a workflow based on ticket triggers, and the workflow sends an email to the contact, the email shows on the contact record but does NOT show on the ticket record.
It doesn't appear there is even a filter on a ticket record's timeline that would allow you to toggle on/off marketing emails, suggesting these emails are not designed to show on tickets.
I think the Ticket should show all information that was generated regarding any automated emails etc, inside the ticket.
