Enrich form leads with Lusha, waterfall enrichment, HubSpot, and Slack

Description

How it works
A webhook receives a form submission with an email address
The email is validated, then Lusha enriches the contact
If phone or email is missing, a fallback provider fills the gaps via HTTP request
Data from both sources is merged, upserted into HubSpot, and an SDR alert is sent to Slack
The webhook returns the enriched lead as a JSON response

Set up steps
Install the Lusha community node
Add your Lusha API, HubSpot, and Slack credentials
Configure the fallback HTTP node with your secondary provider's API endpoint and key
Point your form's action URL to the webhook endpoint