The plugin, Microsoft's attempt to create a Facebook-like inbox within Outlook, was announced last November but did not yet support Facebook.
With updates to the plugin just unveiled, the tool now supports Facebook and Windows Live Messenger, in addition to the previously supported LinkedIn and MySpace.
Twitter is still not among the list of supported social networks.
The Outlook Facebook plugin is a download that ranges between 9.7MB and 21.7MB, and works with Outlook 2010, 2007 and 2003.
"The Microsoft Outlook Social Connector Provider for Facebook allows you to connect your Facebook account to the Outlook Social Connector and obtain information about your friends and colleagues," Microsoft says. "You can see status updates and recently posted items from your Facebook contacts
"You can also use Outlook Social Connector to display a quick view of related Outlook content when you click on an e-mail from a contact, such as recent e-mail conversations, meetings, and shared attachments to help you easily track your communications."
No word yet on when the Outlook Social Connector will officially support Twitter, but some third-party developers have built integrations to connect the two programs.
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This story, "Microsoft Outlook pulls in Facebook status updates" was originally published by Network World.