If you receive nuisance emails such as newsletters, marketing or social media updates which you do not wish to continue receiving but do not think pose a threat, you can block the sender or sender’s domain.

Blocking senders in Microsoft Outlook 2010

The easiest way to block a sender in Microsoft Outlook 2010 is to right click on the email in your inbox and choose Junk from the dropdown list. However, you may also want to block multiple senders at once, or block a sender that you have not yet received an email from.
Follow the instructions below to do this with Microsoft Outlook 2010.

• Click Home at the top of the screen and click on Junk in the menu bar.
• Click on Junk Email Options from the drop down list
• Select the Blocked Senders tab from the top ribbon of the window that appears on screen
•  Click Add on the right side of the window
• Type the email address you wish to block and click OK
•  Repeat steps 4. & 5. to add more addresses you wish to block
• When you have finished, click OK at the bottom of the window

You can also use the same Blocked Senders tab to remove a sender from your blocked senders list if you have added them in error.

• In the Blocked Senders tab, highlight the email address you wish to remove and click Remove. You can highlight and remove more than one email address at once
•  Repeat step 1. to remove more addresses
• When you have finished, click OK at the bottom of the window

Blocking senders with Outlook Web App (OWA)

The easiest way to block a sender in Outlook Web App (OWA) is to right click on the email in your inbox, select Move from the dropdown list and then select Junk Email. However, you may also want to block multiple senders at once, or block a sender that you have not yet received an email from. Follow the instructions below to do this with Outlook Web App.

1. Click on the settings icon at the top right of the screen and select Options
2. Click Block or Allow on the left side of the screen
3. Scroll down to the Blocked Senders section
4. Click the plus icon on the right side of the window
5. Type the email address you wish to block and press Enter on your keyboard
6. Repeat steps 4. & 5. to add more addresses to block
7.  When you have finished, click Save at the bottom of the page

You can also use the same Blocked Senders section to remove a sender from your blocked senders list if you have added them in error.

1.  In the Block Senders section, highlight the email address you wish to remove and
   click the minus icon. You can highlight and remove more than one email address at a time
2.  Repeat step 1. to remove more addresses
3.  When you have finished, click Save at the bottom of the page