Yes Outlook does have a block sender. I put their email address in it and they take over. However, it will not stop the other ones from coming. My son has instilled in me (even though I don't) to have a genaric email i.e Gmail,Yahoo.com or Hotmail and use that for all newsletters and buying things and what ever else you do. Then if you get something you want to get in your own box you can go in and change your email with them. I have an yahoo account that gets over 2000 emails before I remember to go in and clean it out.