Hi,
Can you provide a way to configure the email sender with OAuth 2.0?
On the Service Center > Administration > Email we should have the option to use a standard configuration or Microsoft via MS OAuth 2.0, others...
Example of MS Graph API and OAuth 2.0:
https://www.outsystems.com/forge/component-overview/7875/ms-graph-connector-oauth-2-0-o11
Best Regards,
Bruno F. Cantante