One of the surprises when I installed Microsoft Office 365 on the Windows side of my MacBook Air was that there were serious issues with Outlook 2013 and Evernote. If you are like me and use Evernote to help manage your life be careful about upgrading to Microsoft Outlook 2013. Even now, some 4 months after the release of Outlook 2013, Evernote has not resolved the issues and as of yesterday Evernote does not function with Outlook 2013. For more on this check out this link –http://discussion.evernote.com/topic/31778-evernote-plug-in-for-outlook-2013/.
In addition to not working, Evernote will hang Outlook 2013. So if you depend on being able to store emails in Evernote you may want to think twice about upgrading to 2013. Thankfully I have one machine still on Outlook 2010 so can stumble through but it is not very efficient or pretty.