Microsoft has posted up on their Office blog that the company blocks 10 million spam message per minute but as the spam evolves, so too are the tactics to block the unwanted email



From Neowin:

Spam mail is an issue for everyone but when you are the provider of the email account, it is up to you to figure out how to block that unwanted content from reaching the user's inbox. For Microsoft, this is an ongoing challenge as they host millions of email accounts between Hotmail and Outlook which means that if they miss one type of spam message, it will impact millions of users.

Microsoft has said that they block ten million spam message per minute which is a massive amount of filtering. When you consider that it does all of this without flagging legitimate email, it becomes even more impressive. Although, without knowing how they calculate this number, it may not be as impressive because if they count one email that is targeted to ten million accounts in that figure as ten million, then it is not nearly as impressive as blocking ten million different types of spam messages.

  Microsoft blocks 10 million spam messages per minute