Changing default email client in EndNote X7

I use X7 and use Outlook as my default client. (MS Office 365)  In  Outlook preferences, it is set to be the default email client.  I have Thunderbird still loaded on my computer because I occassionally need to reference an old email or address that didn’t migrate to Outlook.  When I try to email from EN it automatically selects TBird to send the email.  I don’t want that to happen but rather for it to send through Outlook.  How can I change this?  I agree with the previous responders on this thread that there needs to be a way to select from within EN the default email provider.

Thank you.