I'm trying to add a notification email config into Day CQ Mail Service.
The service works using a dummy SMTP server as smtp.mailtrap.io
But, when trying to add the SMTP.office365.com service, this one requires a TLS encryption, that is not an option on the Service window.
There is a way to add this encryption and allow this SMTP service work on AEM?
Based on this thread:- TLS support in Day CQ Mail Service
OOTB service does not supports TLS. You would need to write a custom AEM Mail service that uses Mail API to do this.