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How to Block Malicious Email Senders in Microsoft 365/Outlook
How to Block Malicious Email Senders in Microsoft 365/Outlook
Lockwell Support avatar
Written by Lockwell Support
Updated over 3 months ago

Blocking unwanted or malicious email senders in Microsoft 365 (Outlook) is an essential step to keep your inbox secure. Follow these simple steps to block a sender:

Step 1: Open Outlook

  1. Log in to your Microsoft 365 account.

  2. Open Outlook by clicking on the Outlook app.

Step 2: Locate the Email

  1. Find an email from the sender you want to block.

  2. Click on the email to open it.

Step 3: Block the Sender

  1. In the email window, click on the "Junk" dropdown menu in the toolbar.

  2. Select "Block" from the options.

Step 4: Confirm Blocking

  1. A prompt may appear asking you to confirm blocking the sender. Click "OK" to confirm.

Step 5: Check Blocked Senders (Optional)

  1. Click on the gear icon (Settings) in the top right corner.

  2. Select "View all Outlook settings."

  3. Go to "Mail" > "Junk email."

  4. Here, you can see a list of blocked senders. You can add or remove addresses as needed.

Step 6: Report Phishing (Optional)

If you believe the email was a phishing attempt:

  1. Click on the "Junk" dropdown in the email window.

  2. Select "Report phishing."

Additional Tips

  • Unblocking a Sender: To unblock someone, go to the "Junk email" settings and remove their address from the blocked list.

  • Creating Rules: For more control, you can create rules to automatically move or delete emails from specific senders.

By following these steps, you can efficiently block malicious email senders in your Microsoft 365 account.

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