xobni seems to have plans for something akin to this: "Notably, Xobni is also working with third party developers to let them build applications with Xobni. By

xobni seems to have plans for something akin to this: "Notably, Xobni is also working with third party developers to let them build applications with Xobni. By allowing third party integration for its APIs, Xobni becomes a trojan horse for those third parties to access Outlook integration through a plugin. Microsoft Outlook doesn’t offer a friendly set of APIs for people to plug into Outlook, and so Xobni hopes to become the place developers come to for such access" Doesn't seem like a large stretch of the imagination to think they will do this for webmail as well, especially with the "leak" of their Yahoo mail integration.