Manages contacts in a Notion database by email, blocking duplicates on creation and returning structured JSON for frontend apps.
Verified 2026-07-07
Ops-ITDeveloper-Engineering
What it does
You can manage your Notion contacts by email with a backend API that automatically blocks duplicates on creation. This workflow updates existing details or fetches specific information instantly, returning structured JSON ready for your frontend apps.
How it works
When it runs
Triggered by an event · Event · on webhook POST request
⚠ Notion API search is not case-sensitive by default so you must normalize input emails to lowercase before querying to prevent duplicate entries.
⚠ The Notion Search endpoint has a rate limit of 3 requests per second so add a small delay or queue mechanism if bulk processing is anticipated.
⚠ Email properties in Notion are often stored as text rather than email types so ensure your filter logic matches the exact string format used during creation.
⚠ Webhook retries can cause duplicate updates if the workflow lacks idempotency checks so implement a unique transaction ID or check for existing records before updating.
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