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Automate Event Follow-Ups with GPT-4, LinkedIn & HubSpot Multi-Channel Outreach

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Created by: Oneclick AI Squad || oneclick-ai

Oneclick AI Squad

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Last update a day ago

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Automate your post-event networking with this intelligent n8n workflow. Triggered instantly after an event, it collects attendee and interaction data, enriches profiles with LinkedIn insights, and uses GPT-4 to analyze engagement and generate tailored follow-up messages. High-value leads are prioritized, messages are sent via email, LinkedIn, or Slack, and all activity is logged in your CRM and database. Save hours of manual follow-up while boosting relationship-building and ROI. 🤝✨

Advanced Features

  • Webhook automation – Starts instantly on event completion
  • Multi-Source Enrichment – Combines event data, interactions, and LinkedIn profiles
  • AI-Powered Insights – GPT-4 analyzes behavior and suggests personalized talking points
  • Smart Priority Filtering – Routes leads into High, Medium, and Low priority paths
  • Personalized Content Generation – AI crafts custom emails and LinkedIn messages
  • Multi-Channel Outreach – Sends via Email, LinkedIn DM, and Slack
  • CRM Integration – Automatically updates HubSpot with contact notes and engagement
  • PostgreSQL Logging – Stores full interaction history and analytics
  • ROI Dashboard – Tracks response rates, meetings booked, and pipeline impact

What It Does

  • Collects attendee data from your event platform
  • Enriches with LinkedIn profiles & real-time interaction logs
  • Scores networking potential using engagement algorithms
  • Uses AI to analyze conversations, roles, and mutual interests
  • Generates hyper-personalized follow-up emails and LinkedIn messages
  • Sends messages through preferred channels (email, LinkedIn, Slack)
  • Updates HubSpot CRM with follow-up status and next steps
  • Logs all actions and tracks analytics for performance reporting

Workflow Process

  • The Webhook Trigger initiates the workflow via POST request with event and attendee data.
  • Get Attendees fetches participant list from the event platform.
  • Get Interactions pulls Q&A, chat, poll, and networking activity logs.
  • Enrich LinkedIn Data retrieves professional profiles, job titles, and company details via LinkedIn API.
  • Merge & Enrich Data combines all sources into a unified lead profile.
  • AI Analyze Profile uses GPT-4 to evaluate interaction depth, role relevance, and conversation context.
  • Filter High Priority routes top-tier leads (e.g., decision-makers with strong engagement).
  • Filter Medium Priority handles warm prospects for lighter follow-up.
  • AI Agent1 generates personalized email content using chat model and memory.
  • Generate Email creates a professional, context-aware follow-up email.
  • Send Email delivers the message to the lead’s inbox.
  • AI Agent2 crafts a concise, friendly LinkedIn connection message.
  • Generate LinkedIn Msg produces a tailored outreach note.
  • Send LinkedIn posts the message via LinkedIn API.
  • Slack Notification alerts your team in real-time about high-priority outreach.
  • Update CRM (HubSpot) adds contact, tags, and follow-up tasks automatically.
  • Save to Database (Insert) logs full lead journey and message content in PostgreSQL.
  • Generate Analytics compiles engagement metrics and success rates.
  • Send Response confirms completion back to the event system.

Setup Instructions

  • Import the workflow JSON into n8n
  • Configure credentials:
    • Event Platform API (for attendees & interactions)
    • LinkedIn API (OAuth2)
    • OpenAI (GPT-4)
    • SMTP (for email) or Email Service (SendGrid, etc.)
    • HubSpot API Key
    • PostgreSQL Database
    • Slack Webhook URL
  • Trigger with a webhook POST containing event ID and settings
  • Watch personalized outreach happen automatically!

Prerequisites

  • Event platform with webhook + attendee/interaction API
  • LinkedIn Developer App with API access
  • OpenAI API key with GPT-4 access
  • HubSpot account with API enabled
  • PostgreSQL database (table for leads & logs)
  • Slack workspace (optional, for team alerts)

Example Webhook Payload

{
  "eventId": "evt_spring2025",
  "eventName": "Annual Growth Summit",
  "triggerFollowUp": true,
  "priorityThreshold": {
    "high": 75,
    "medium": 50
  }
}

Modification Options

  • Adjust scoring logic in AI Analyze Profile (e.g., weight Q&A participation higher)
  • Add custom email templates in Generate Email with your brand voice
  • Include meeting booking links (Calendly) in high-priority messages
  • Route VIP leads to Send SMS via Twilio
  • Export analytics to Google Sheets or BI tools (Looker, Tableau)
  • Add approval step before sending LinkedIn messages

Ready to 10x your event ROI?
Get in touch with us for custom n8n automation!