I have written an email backend that sends via the Microsoft Graph API. What sets this apart from other apps is, that the app does not require any dependencies and allows multiple different configuration types from most permissive and simple to deploy – to most restrictive and secure, which none of the other apps allow you to do.
The app is available via pip (pip install django-msgraphbackend) and the readme/docs can be found in the GitHub Repository (GitHub - danielniccoli/django-msgraphbackend: Microsoft Graph Backend for Django – An dependency-free email backend for Django that sends emails via Microsoft Graph.)