An error occurred while saving the commentGareth D commented
All you have to do is change the default email application. But, you need to have an account in Mac Mail to do it. I just added my gmail account and told it to sync notes only.
Once you've done that, load Mac Mail, click Mail>>Preferences and set the default to Outlook.
It fixes it immediately. If you bothered, you can then remove your account from MacMail.
Nothing else technical is needed.