Hello zenson1,

In order add an email address to block senders list on MSN client please follow the below steps.

In order to check please follow these steps:

1. Sign in to MSN client.
2. Click on Help and Settings and then click on Settings.
3. Click on Show all Settings and click on Email.
4. Click on Block Senders list and type add the email address that you want to add.

In order add an email address to block senders list on outlook.com/hotmail.com please follow the below steps.

1. Go to http://hotmail.com//www.outlook.com and sign in using your email address and password.
2. Click on Hotmail which will be at the top of the screen and which will take you to your inbox.
3. Click on the gear icon (settings)  which will be on the top right hand side and from the drop down menu click on “More options”.
4. Click on block senders list and add the email address.

Sincerely,

Mubarak