"Can you spot what Google goes through in this email? It's easy. They go through everything. Email between a husband and wife or two best friends should be completely personal but Google crosses the line and goes through every single gmail. Every word in every email."
Microsoft's ad may be a response to Google discontinuing Google Sync, a service that provided Google Mail, Calendar, and Contacts sync via the Microsoft Exchange ActiveSync protocol. While this likely affected some iOS users it is a much bigger problem for Windows Phone users who don't have CalDAV or CardDAV support yet.
Take a look below...