Not able to use MS Word "Send Document" Feature with Mailspring as Default Mail Client on Mac?

Hi,

I absolutely love Mailspring, but I can’t seem to figure out how to use the Microsoft Office feature of File>Share>Send Document with Mailspring as my default email client.

If I change my email client to Mail or Outlook inside the Mail app, the feature on MS Word works fine. Is there a setting I need to change inside Mailspring for this to work?

I appreciate any help you can offer.

Thank you.