The available resources do not show up, what you are asking for, i.e. there’s no “Use Outlook Account”:
there’s only “Use Desktop Outlook App” and “Use Outlook 365”.
When using the App - a draft email gets created, but not send.
When I download your solution, clearly the “Use Outlook Account” resource is shown - and works.
What is missing in my setup, that a new project does load different resources?
The newest version of the package then uses “use desktop outlook app” → functionally they should do more or less the same but new functionality is always added.