We use GMass to send multiple emails.
Using Zapier, I am able to create new entries into a custom Module in Zoho CRM - Email Captures.

What I need to do now is send the date and campaign ID from the new Module entries from Email Captures to the Contact record.

My issue is, GMass only captures the contacts Email address, Date sent, and Campaign ID.

I am attempting to use Flow to achieve this, but I am stuck.

How do I convert an email address to the contact so I can update the Campaign ID and Date the email was sent?

Open to all suggestions.