In the/my newest update of Acrobat Reader, the button to send the pdf as attached to email has now become a "Share button" and now requires an extra click in order to send the pdf attached to an email. As far as I can see, there's no way to enable Reader to do this by default. In my opinion this is a downgrade, as I /only/ send attached pdf, never share links.
Could you either reverse the change or make it possible to make my choice as default option.