We are moving closer and closer to the social inbox—email that talks to your social networks. Today, Xoopit launches in private beta. Not to be confused with Xobni (another email 2.0 app), Xoopit is a plug-in for FireFox that lets you easily view all the photos, videos, and files buried in your e-mail as attachments and sent to you as links from across the Web. The first 700 TechCrunch readers to sign up here will get in. CEO Bijan Marashi explains:

We are building an index of your personal information across the Internet. Email is the most important repository of your personal data. Xoopit processes the social media you have been piling up for years and transforms it into a fun application.

The application indexes your Gmail (other email services will be added in the future) and lets you view attached files (photos, videos, etc). It also fetches any images that friends might have emailed you from Flickr, Picassa, Shutterfly, Kodak, or YouTube. It is an attempt to turn your email inbox into a dashboard for managing all the pictures and videos everyone emails you all the time. In turn, you can post your own photos, videos, and other media directly to Facebook, your blog or email from the application.

Xoopit is also announcing a $5 million A round from Accel and Foundation Capital. It previously raised $1.5 million in an angel round from Foundation Capital, Michael Dearing, Jeff Ralston, and Eric Telenius.