Integration with Outlook

Does anyone else see the value of integration of C with Outlook?  I feel it would be a real benefit particularly with the calendar.  I am unsure about email.  As an owner and C user I highly value the best practices C requires with respect to attaching emails to jobs.  I don't want to lose that, therefore my hesitations about email.

Calendar would be a big benefit.  Virtually the entire world uses Outlook or some software that integrates with Outlook's calendar.  

How do others feel?  How much priority would you place on C integration with 3rd party software and Outlook specifically?