To view the suppliers that were sent an invitation, click on the 'Network' tab. On this page you will see 3 tabs- Companies, Invitations, Contact. By clicking on 'Invitations' you will see all of the invitations that have been sent to your suppliers. You can view them at a 'Company' or 'Individual' level.
The list of invitations shows the following fields of information:
the supplier's company name
the first and last name of the point of contact, if available
the email address where the invitation was sent
the date the email was sent
the date the email opened
the date the supplier registered.
You can also export this data if you prefer, by clicking the 'Export' button on this page and selecting the format you want.