Mailto: Setup For Chrome To OWA

I’m trying to figure out if setting up mailto office 365 is possible. 

Have come up with this:

Add chrome extension “Mailto”

Set custom URL to: https://outlook.office365.com/owa/#viewmodel=IMailComposeViewModelFactory&wid=56&ispopout=1&to={to}&subject={subject}&body={body}

It opens the new message webpage but is not carrying the To, Subject or Body fields across to the new message.

Thanks in advance.