Using classic Outlook for Windows in business environments
Hello! My name is Mustafa, I will be assisting you today
Note: This is a user-to-user support forum and I am a fellow user who doesn't work for Microsoft.
That is definitely a phishing email, Microsoft doesn't send out emails for accounts being closed. Your account will only be closed if you choose the close it yourself, or due to inactivity if you don't use it for 2 years and even then you won't receive an email about your account being closed.
So do not interact with that email and mark it as junk.
Please let me know if you need further assistance.
Warm Regards,
Mustafa