Just like What happens if I send someone a PreVeil email but they don’t have PreVeil?, if you try to share a folder through PreVeil with someone who is not yet using PreVeil, your intended recipient will receive a personalized invitation asking them to join PreVeil.
The invitation email looks like this:
The recipient will need to install PreVeil on their device and create an account with the email address where they received the invitation. Once this is complete, you will receive an in-PreVeil notification that they have created their account. You will then need to re-share the folder with them to give them access.