Generating Outlook appointments with VBA

Hi All, I have an Access database that can generate iCalendar and vCalendar files, which are then sent to the relevant parties and added to whichever system they are using.  

However, I want to be able to generate a file that I can send out, which also has the "Accept", "Decline" options (Outlook calls it 'Invite Attendees').  Is this possible?

Thanks as always for the help.