Hotmail users may see a decrease in spam clogging up their inboxes in coming weeks.
Microsoft is teaming up with Brightmail to incorporate the company's spam-filter technology in its free email service.
The company is incorporating Brightmail's Solution Suite to filter spam at the incoming gateway, before it's delivered to Hotmail users' inboxes.
The spam guard will be fully deployed later this year to serve Hotmail's 110 million worldwide users.
Microsoft's spam-block is nothing new for free email services, many of which have already adopted spam-fighting measures. Yahoo, for example, routes unsolicited email to a bulk email folder in users' inboxes.
The Brightmail solution works by using a collection of more than 200 million email addresses designed to attract spam, allowing Brightmail to identify and eliminate spam before it reaches users' inboxes.