Re-engage event participants from HubSpot with Gemini and email outreach

Name: Re-engage event participants from HubSpot with Gemini and email outreach
Availability: InStock
Author: Milo Bravo

Re-engage event participants from HubSpot with Gemini and email outreach preview

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Overview

Event Alumni Re-engager: HubSpot → Gemini → Personalized Outreach

Who is this for? Event marketers and conference organizers who want to reactivate past attendees with AI-personalized emails at 3-5x ROI vs. cold leads.

What problem is this workflow solving? Alumni gold is untapped:

Past attendees convert 3-5x better
Manual segmentation takes hours
Generic emails get ignored

This auto-segments + personalizes outreach from HubSpot data.

What this workflow does

CRM → AI Alumni Machine:

Trigger: Manual (or schedule 8-12 weeks pre-event)
HubSpot Pull: Past event_registration contacts
Smart Filter: Exclude current registrants
3-Tier Segments: Champions (3+ events) / Returning (2) / One-timers (1)
Gemini Personalization: Unique copy per attendee
Email Send: Alumni-exclusive CTAs
Slack Summary: Campaign stats posted

Main workflow required. This is a sub-workflow triggered by Event Registration with Auto-Enrichment

Setup (7 minutes)

HubSpot: Header Auth (Bearer YOUR_API_KEY)
Custom Property: event_registration (comma-separated event IDs)
Gemini: Flash Lite API key
Email: SMTP + Slack OAuth2
Config: Event details in Set Campaign Config

Fully configurable—no code changes needed.

How to customize to your needs

Segments: Add VIPs / Speakers / High-LTV
CRM: HubSpot → Salesforce → Sheets
Copy: Edit Gemini prompts for tone/industry
Channels: Add WhatsApp / LinkedIn
Timing: Cron for automated runs

HubSpot Setup: event_registration property auto-created by companion template.

ROI:

3-5x conversion vs. cold leads
60% lower CAC (alumni segment)
2h → 2min campaign launch

Need help customizing?: Contact me for consulting and support: LinkedIn / Message

Keywords: event participant re-engagement, conference registration, HubSpot automation, personalized outreach, conference marketing

Milo Bravo

14 workflows

Complexity

advanced

Published 04 Mar 2026

Likes 0

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Install path: /data/workflows/13843/13843.json

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Re-engage event participants from HubSpot with Gemini and email outreach

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Overview

Event Alumni Re-engager: HubSpot → Gemini → Personalized Outreach