Add, update, and fetch contacts from a Notion database by email

About

🚀 Overview Store, update, and retrieve contacts in a Notion database by sending a JSON payload to an n8n workflow. Email is used as the unique identifier — no Notion page IDs required. ✨ What this workflow does The workflow has three actions, controlled by a single action field in the payload: Create** — checks if a contact with that email already exists. Blocks the request if it does. Creates a new row in Notion if it does not. Update** — finds the contact by email automatically and update