Can I view email tracking history on any object?

When you send out a mass email via Campaign Monitor we will create email tracking history records within Salesforce as long as your settings permit this (by default they do). An email tracking history record can be linked to a contact to lead, the match is made using the standard email address field.  On the contact or lead page layout, you can view our email tracking history related-list (this is added automatically during the initial set-up)

It is therefore not possible to add our related list to objects other than contact or lead.  You can, however, add our Lightning component which can work on any object with any email field. The component surfaces data rather than storing it.  To learn more please see - https://www.beaufort12.com/campaignmonitor/support/email-tracking-statistics#Lightning-component