Generate PDF business proposals with Google Gemini and PDF Generator API

AI-Powered Automated Proposal & Lead Management System This advanced n8n workflow automates the transition from "Raw Lead" to "Sent Proposal." By integrating Email Verification, Large Language Models (LLMs), and Document Automation, it eliminates manual data entry and ensures that every proposal sent is personalized, professional, and delivered to a verified address.

🛠️ How It Works 1. Data Intake & Validation The workflow is triggered via a Webhook. Before any processing occurs, the data passes through the Hunter node, which performs a real-time email verification check.

Smart Error Handling: An If Node evaluates the verification result. If the email is invalid or "risky," the workflow redirects to a Respond to Webhook node, providing immediate feedback to the source and preventing wasted API credits on downstream nodes.

2. The AI Agent Layer Once validated, the data reaches the Set Fields node to be mapped for the AI.

Custom Prompt Logic: The AI Agent node, powered by Google Gemini, contains a sophisticated custom prompt. This prompt acts as a "template engine," instructing the AI to take specific input variables (like client name, project scope, and budget) and output a clean, professional HTML structure. This allows for dynamic content generation that adapts to the unique context of every lead.

3. Professional PDF Generation Instead of sending a plain text email, the workflow passes the AI-generated HTML to the PDF Generator API. This tool renders the code into a high-quality, brand-consistent PDF document ready for client viewing.

4. Automated Delivery & CRM Logging Gmail Integration: The final PDF is automatically attached and sent to the verified email address with a personalized message.

Google Sheets Logging: To ensure full visibility, the workflow appends a row to a Google Sheet, tracking the date, client details, and the status of the sent proposal.