Microsoft has published thirteen short promotional videos on its Windows Phone YouTube channel. Each video highlights a specific piece of Mango functionality, ranging from Outlook to Vision Search and OneNote. Watching the series is a useful way to be reminded of what Microsoft considers the key functions and features of the Windows Phone platform.

We've embedded three of these video below and you view the remaining ones on the Windows Phone YouTube channel.

Outlook built-in

Video description:

Stay on top of your email wherever you go. The mobile version of Outlook makes it easier than ever to sort emails and keep track of conversations. With Windows Phone 7.5, you can sort, organize and view your work, personal and Facebook calendars all in one place. See how you can tame your inbox.

OneNote built-in

Video description:

With the mobile version of OneNote and Windows Phone 7.5, you can take notes whenever you're on the go. You can even synchronize your notes and access them on your computer when you get back to your desk. See how easy it is to be productive anywhere.

Vision Search built-in

Video description:

Interested in the book your friend is reading or something they're wearing? Snap a picture of it with your Windows Phone and Bing Vision Search will display results all about it, even where to where but it.