What's stopping you from creating an email address that you never use for anything else?
My question is what is forcing me to create an email address.
Does the law force me to create an email address (knowing that it would then be unavoidably used to facilitate the sender sharing whatever they want about me with Microsoft)?
It’s important to note that if your email address falls in the hands of a gov or org, they will use it without encryption. They will share willy nilly anything they want with Microsoft (their email provider) in the loop. And if you make a GDPR art.17 request to have your email address erased from their records after they abuse it, they ignore those requests and continue using your email address. So it’s best not to give them an email address to begin with.
(edit) govs and orgs seem to always put my full name in the e-mail headers, sometimes even including my middle name. And they usually greet me by surname. This ensures that Microsoft trivially knows exactly who to associate the content with. IMO it infringes on the data minimisation principle.
Juridisch Advies NL
Legal advice for The Netherlands. English posts allowed. Give context for your case. Be wise, anonymise your case. When answering, refer to law and/or jurisprudence.