In the event, you wish to immediately block an email that you recieve instead of reporting as junk.
Block a sender in Outlook Client
When you no longer want to see messages from someone, you can block a sender.
- Right-click a message from the sender you want to block, and then click Junk > Block Sender.
The blocked person can still send you mail, but if anything from his or her email address makes it to your email account, it’s immediately moved to the Junk Email folder. Future messages from this sender will go to your Junk Email folder or End-User Quarantine if enabled by your administrator.
It’s a good idea to periodically review email messages identified as junk to make sure you’re not missing important messages.
Block Sender in Outlook Web
- Select Settings > View all Outlook settings.
- Select Mail > Junk email.
- If you want to block an email address, enter the email address in Blocked senders and select Add. If you want to block all email from a domain, enter the domain name in Blocked domains and select Add.
- Select Save.