Reason 3: Outdated Outlook client software. Reason 2: Incorrectly configured spam folder in Outlook client. Reason 1: Spammers do not send emails from the same address twice. So, take a look at the reasons mentioned below: 04 Bonus Part: What to Do When Email Files Are Corrupt? Part 1: Why is Outlook Block Sender Not Working?īefore implementing the methods to fix the problem of why Outlook is not blocking emails, it is crucial to analyze the reasons for this problem.
