If you are receiving unwanted or suspicious emails you have the option to block the sender by following the below instructions.
For those that are using outlook on the web, follow the below steps to mark email as phishing.
1. Login to outlook on the web by selecting your favorite internet browser and sign-in
2. Then open the outlook app and you should now see your emails
3. Select the email that you would like to block, then on the right window pane select the three ellipses and go down to Security options. From there you have three options to select from. Select Mark as phishing if you would just like to report the sender to Microsoft otherwise select Block to block sender and no longer receive messages from that sender.