Comeen Visitors is a great way to manage your external visitors.
We offer an Outlook add-in that allows your collaborators to pre-register your external visitors.
In order to make our add-in available to all your collaborators you can follow this documentation.
To start, go to the following link: https://appsource.microsoft.com/en/product/office/WA200003168?tab=Overview
Click on "Get it now" :
Fill in your information and click on "Continue":
Wait for the Success Message:
You are ready to use our Outlook add-in!