One of the apps they launched as a vertical is email, with contacts and calendar. This sounds familiar too... If you haven't tried the application, I would definitely recommend you do. They have a free service called goWebtop, which allows you to use their web email client to read your personal email on the web (via IMAP), and they just added a preview of their new calendar interface - which is the most beautiful calendar interface I ever seen (and I am picky, when it comes to user interfaces...).

They do not do collaboration and they do not offer a mail server, so they do not compete with companies like Zimbra, OpenXchange, Scalix or PostPath. They have "just" a web client. The match with us is easy to see. They bring the Web 2.0 experience to the consumers, we bring the Mobile 2.0 experience to the consumers - powered by advertising. Very very cool.
You'll hear more from this partnership soon...