2. Select the Campaigns option 
3. You will see a list of campaigns, what you are looking for is a campaign of
eventhive client name - long letters and numbers string -invite
for wbcsd below you are looking for wbcsd-(long letters and numbers string)-invite
4. Depending on when the initial invitation email was sent, you will need to scroll down the page or go into the second page, until you find it. The highlighted one below is the original invite email (as opposed to the invite accepted), and shows the first invitations were sent on 24/03 though in this case a second invite must have been sent as there are only 700 attendees in the back office.
5. Click on the green link, you will see further statistics on the blocked and bounced rates, you can drill down further into that page
Further information
If you want to be 100% sure of the campaign name, do the following
1. In the VX back office, click the logo on the top left
2. Scroll down the right hand panel until you see the Configuration section
3. Click the Update button
4. Scroll to the User invite email section
5. Hover the mouse over the Create template button, you will see the campaign ID in the tooltip, on the bottom left of your Chrome browser in this case it is
620ce600f79d50a3dd4c0734
6. You can use the search facility in Mailjet with this code, though you still need to look for the invite suffix
