In late 2019 the announcement was issued regarding the end of support for Basic Authentication in Exchange Online. The date for this was set to the 13th of October 2020.
With the number of current Service Manager customers aiming to migrate to Exchange Online, the option to switch over to Modern Authentication prior to the date mentioned above will be the option to maintain the functionality of Smart Email.
Product Management for SM already acknowledged the above requirement.
In meantime, would there be any alternative to the Smart Email Integartion for Service Manager that can utilize Modern Authentication?