Recently, Dan Ardelean unlocked the Windows Phone 7 Series emulator completely allowing the developers to look inside the mobile operating system components of the ROM which was not accessible otherwise.
Read the complete story here. We also posted step by step tutorial on how to unlock Windows Phone 7 Series emulator. But unlocking Windows Phone 7 Series emulator is easier if video tutorials are followed. The video tutorial below is courtesy of folks at TechAU in order to hack windows phone 7 emultor:
Unlocking the Windows Phone 7 Series Emulator
The other video (via pocketnow) show you the messaging, email, and calendar applications, finding the Microsoft gives you a variety of syncing options to manage multiple accounts.