Mailspring in Share Menu on Mac OSX

Hi all,

Sorry if this was asked but I did not see it.

I am using an iMac with Mailspring.

I do not have the ability to share from Preview or Finder a PDF document to the Mailspring app. I have set it as the default mail reader and it is checked off in the Extensions part of System Preferences. I was switching from MS Outlook because I couldn’t do it either. I can only share using the Apple Mail app.

Thanks in advance.