Respond to inbound leads with personalized videos using Heygen AI and GPT-4

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2/3/2026

Google Sheets User Management Integration Automation Google Groups

🎥 AI-Powered Inbound Sales Rep Video Agent – Auto-Respond to Leads with Personalized Videos Description:

This workflow helps you instantly respond to inbound leads with a hyper-personalized video and email—fully automated using n8n, Heygen API, and OpenAI.

Watch the step-by-step Tutorial Build here: https://www.youtube.com/@Automatewithmarc

When a visitor submits a form on your website, this AI agent dynamically:

Creates a video script tailored to the lead's input using an AI prompt agent Generates a video using the Heygen API with a branded avatar Crafts a contextual follow-up email embedding the video Sends it to the lead’s inbox with a call-to-action

This is ideal for:

Marketing agencies looking to impress new prospects Sales teams aiming to boost inbound conversions Founders and freelancers building trust through instant video touchpoints

📥 How It Works:

Form Trigger Captures user inputs like name, email, business URL, and marketing pain points.

AI Video Prompt Agent Uses LangChain + OpenAI to write a short, personalized script (e.g., “Hey this is Jason from Purple Unicorn Marketing...”).

Video Generation (Heygen API) Triggers a video using a selected avatar and voice style.

Video Status & Wait Logic Monitors the video generation status until completed.

Get Final Video URL & Thumbnail Retrieves the finished video and prepares for embedding.

Email Writer (GPT-4) Generates an HTML-based outreach email including the lead's info and embedded video thumbnail with a booking link.

Email Delivery (Gmail Node) Sends the full message to the inbound lead automatically.

⚙️ Tools & Integrations: n8n (self-hosted or cloud)

Heygen API – for video generation

LangChain + OpenAI GPT-4 – for script writing and email creation

Gmail Node – for automated outreach delivery

🔧 Setup Instructions: Heygen API Key Create a Heygen account and retrieve your API key. Set it up as a credential in n8n (httpHeaderAuth).

OpenAI Key Add your OpenAI API key under OpenAI credentials.

Gmail OAuth2 Connect your Gmail account using OAuth2 for sending emails.

Customize the Prompt Modify the system message in the LangChain Agent node to reflect your brand tone or CTA.

Calendly Link Update the call-to-action links in both the video prompt and email generator nodes with your real booking URL.

💡 Use Cases: Automating welcome sequences for new signups

Personalized video lead responses for agencies

AI-driven inbound sales agent for bootstrapped startups

Respond to Inbound Leads with Personalized Videos using HeyGen AI and GPT-4 (Placeholder)

This n8n workflow is currently a placeholder and does not contain any active logic or connections. It outlines the initial components for a potential automation that could aim to respond to inbound leads with personalized videos.

What it does (Conceptual)

While the provided JSON is empty, a workflow with the described intent would typically perform the following steps:

Trigger on New Lead: Listen for new lead submissions (e.g., via a form, CRM webhook, or email).
Extract Lead Information: Parse relevant details from the lead, such as name, company, and specific interests.
Generate Personalized Script (GPT-4): Use GPT-4 to create a personalized video script based on the lead's information and predefined messaging.
Generate Personalized Video (HeyGen AI): Send the generated script to HeyGen AI to create a personalized video with an AI avatar.
Send Video to Lead: Deliver the personalized video to the lead, likely via email or a messaging platform.
Update CRM: Log the video interaction in the CRM system.

Prerequisites/Requirements (Conceptual)

To implement the full workflow as intended, you would likely need:

n8n Account/Instance: To host and execute the workflow.
HeyGen AI Account & API Key: For generating AI-powered videos.
OpenAI Account & API Key: For accessing GPT-4 to generate personalized scripts.
Lead Source (e.g., Webhook, CRM, Form): A mechanism to trigger the workflow upon a new lead.
Email Sending Service (e.g., Gmail, SendGrid): To send the personalized video to the lead.
CRM System (Optional): To log interactions (e.g., Salesforce, HubSpot).

Setup/Usage (Conceptual)

Import the workflow: Import the provided JSON into your n8n instance.
Configure Trigger: Set up the initial trigger node (e.g., "On form submission") to listen for new lead data.
Add AI Nodes: Integrate OpenAI (for GPT-4) and HeyGen AI nodes, configuring them with your respective API keys and desired parameters for script and video generation.
Add Communication Nodes: Include an email sending node (e.g., Gmail) to deliver the personalized video.
Add CRM Integration (Optional): If desired, add a CRM node to log the interaction.
Activate the workflow: Once all nodes are configured and connected, activate the workflow to start automating your lead responses.

Note: As this workflow is currently empty, the "What it does," "Prerequisites," and "Setup" sections are purely conceptual based on the directory name and common practices for such an automation. You will need to add and configure the necessary nodes and connections to build out the full functionality.

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