Managing personal Outlook.com account settings, security, and privacy
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Microsoft has implemented several AI filters. however, still some emails slip through the cracks.
Please note that attackers can spoof (fake) any address in the “From” field, and sometimes the email address may no longer be visible.
In these situations, you typically cannot report the sender directly or add them to the blocked senders list, because the address is forged and they may change it frequently. Instead, you can create an email rule using the message subject and other recurring keywords. This rule will automatically move similar messages to the Deleted Items folder which will be deleted automatically after 10 days.
To create a rule, sign in with your Microsoft account here https://outlook.live.com/mail/0/options/mail/rules and click Add a new rule.
Alternatively, we recommend that you review your recent account activity for any unusual signs of access. If you notice anything suspicious, please secure your account by setting a strong, unique password and enabling two-factor authentication for added protection.
Also note that emails identified as junk by Microsoft are delivered to your Junk Email folder, which is normal and expected behavior, because the system is automatically filtering suspected spam and unwanted messages to keep your inbox cleaner.