How do I set up a Zap to search Notion database for each attendee email from a Google Calendar invite?

I am trying to find a database item in notion based on the attendees on a google calendar invite. It looks like it's searching the list of attendees "test1@test.com,test2@test.com" vs "test1@test.com" and then "test2@test.com." How can I setup the Zap to search by each email address (for loop) vs just searching by the entire list.