- Mass campaigns are considered as marketing campaigns in the system by default. The checkbox is not present there to avoid the scenario where admin turns it off and the system treats it as transactional and sends it out to unsubscribed guests.
- Ideally, this checkbox is present in all marketing campaigns where an email is sent out to the guest after they make any sort of interaction or if it is their anniversary. For example, Post check-in campaign, Recall campaign, Anniversary campaign, etc. If this flag is unchecked then the system will consider it as a transactional email and send it out to the unsubscribed guests as well
E.g. This checkbox is found at the very bottom of the "Whom" tab which is the second screen on campaign setups
