Blocking an email address or a sender in Windows Live Mail is easy.
- Open up the Windows Live Mail program.
- Right mouse click on the email you want to block from the 'Conversations' list.
- Select 'Junk Email'.
- Select 'Add Sender to Blocked Senders List' to block that email address from emailing you again.
- If you choose 'Add Sender's Domain to Blocked Senders List', any email sent from that domain will be blocked. This is a good way to prevent someone from creating multiple email addresses in order to surpass previously blocked email addresses.