Send AI website audits with GPT-4.1 and Gmail as a lead magnet
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Stefan Joulien
Description
How it works
A prospect submits a form with their email and website URL
The workflow fetches and cleans the website HTML, extracting key business signals
An Analyst Agent reads the content and produces a structured JSON diagnostic (business type, offers, pain points, funnels, copy kit)
A Writer Agent converts the diagnostic into a personalised email with 10 actionable improvements, written automatically in the lead's language
A branded HTML email is assembled and sent via Gmail with numbered improvement cards, a booking CTA and a professional footer
Set up steps
Connect your OpenAI API credentials to both AI model nodes (~2 min)
Connect your Gmail account to the Send Email node (~1 min)
Open the Build Email HTML node and fill in the 6 constants at the top: your name, email, cal.com booking link, Instagram URL, LinkedIn URL and logo image URL (~3 min)
Activate the workflow and share the form URL with your leads
This workflow was created by Stefan Joulien and shared publicly on the n8n community template library. n8nFind indexes it for discovery — the workflow remains the property of its original creator.