Monitored Inbox + MFA support + Drift Email

Trying to get a grasp around the ability for Drift to integrate and work with inboxes protected via MFA. One article specifically calls out that all monitored inboxes have to be user accounts, with credentials (, and I don't see any specifics for how it handles things such as 3rd party idP flows.

There is some information on the user integration through an idP, ( - but it doesn't specifically state this is also acceptable for monitored inboxes.

Is it correct to read that as an unsupported feature? And if so, what is the recommended action - disabling the MFA for all marketing accounts, and sharing credentials among the userbase?