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

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!