Checking HubSpot for Conference Contact IDs

❓I have a list of Contacts from a conference. I want to see if they are in our HubSpot CRM already based off of looking up an email address. If they are, I want the HubSpot Contact Record ID to be returned. I have imported a list of all Contacts into a sheet in the Workbook already. I was trying to run a query to search the sheet of HubSpot Contacts. I searched Slack to see if someone had asked this already, but no luck or I did a poor search.