Stream all your email, and social network (Twitter, Facebook) data into one inbox using InBox2

InBox2 is a web and a Facebook application that integrate your email messages and Twitter stream into one social network. The web app can configure to multiple email accounts (Gmail, Yahoo mail, Live Hotmail and AOL) and presents various ways to see your streams broken down by service, contact, thread or within one powerful stream. […]

InBox2 is a web and a Facebook application that integrate your email messages and Twitter stream into one social network. The web app can configure to multiple email accounts (Gmail, Yahoo mail, Live Hotmail and AOL) and presents various ways to see your streams broken down by service, contact, thread or within one powerful stream. You can send, reply and search in one place. One of the key features for InBox2’s web app and Facebook app is the ability to send Facebook messages or Twitter DMs and replies from within the apps.

More info: InBox2