Managing personal Outlook.com account settings, security, and privacy
Hello! My name is Mustafa, I will be assisting you today
Note: This is a user-to-user support forum and I am a fellow user who doesn't work for Microsoft.
The best way to deal with spam emails in Outlook for the web is to create rules to remove unwanted emails or block all unknown senders. You can learn how to do it in this article:
https://support.microsoft.com/en-us/office/bloc...
It will take a few minutes to set up multiple rules or to block all unknown senders.
Please let me know if this doesn't work or if you need further assistance.
Warm Regards,
Mustafa