The current Zoho Campaign integration for Flow only supports "Add Contact."  (As opposed to Update or Add Contact)   Most of the time that is fine. However, if the contact already exists in the Campaign List, the flow will return an error. That is proving to be a problem for one of my flows.

I am looking for a way check to see if the person is already on the Zoho Campaign list (by looking up their email).  If they are on the list, then I will not continue the flow to call the "Add Contact" function. If they are not on the list, then I will continue the flow to call "Add Contact."

Can anyone provide a suggestion or example on how to

check to see if contact exists in the campaign list by looking up their email