I got an email from an influencer asking if the email sent to them was spam. What do I say?

This does happen sometimes and is a good sign that the influencer is interested in your brand and wants to verify that Lionize is representing you.
Please assure them that yes, the email and the collab is real, and direct them back to the application link for your campaign.
You can find the link to your campaign application at the top right of the Performance tab.