I recently started receiving these irritating emails also. Hesitant to even open them, let alone click an Unsubscribe link, I did some digging, and found they probably are legit. To check if you are subscribed to receive these emails without even opening the email, do the following steps:
- Go to the following (an official Microsoft website): https://www.msn.com/en-gb/personalize/newslettersignup
- Note it mentions the "Start Unfold" and "Start Daily" emails (don't click them though). Instead, click the link at the bottom of the page in small text: "To withdraw consent or manage your preferences, visit the Promotional Communications Manager"
- Enter your email address. They'll send you an email with a link.
- Click the link in the email you receive (funnily enough this actually went to the Junk Mail folder of my Hotmail account - Microsoft even flags their own official email as spam which I find quite comical)
- Then select/deselect the emails you want to be subscribed/unsubscribed to.