You know, at my previous job the company had a semi-strict policies with non-enrolled devices. If we didn't enroll our devices we were locked out of some company systems, but we could still use email and teams (which is like 99% of my use-cases for my phone).

So I obviously opted to not enroll my phone, but that came to bite me in the ass one day when I needed to get a train ticket from my company email (it was a business trip) and the policy prevented non-enrolled devices from attaching or downloading attachments...

Felt like a fool grabbing my laptop to let the train attendant scan the QR code.