Reply to HubSpot form leads in seconds with Claude, Gmail and Slack

by Anas Ashfaq ✓ · 16 views · created 2026-08-11 · Lead Nurturing, AI Chatbot

What this workflow does

This AI workflow has 18 nodes and runs when an HTTP POST request hits its webhook URL. Along the way it connects HubSpot, Anthropic, Gmail and Slack. It also calls gmail.googleapis.com over HTTP.

How it runs

Trigger: When an HTTP POST request hits its webhook URL.

1. Normalize HubSpot Data (Code): runs custom JavaScript code
2. Retrieve HubSpot Lead Details (HubSpot): get
3. If: checks a condition and branches into true / false
4. Set Lead Contact Info (Edit Fields (Set)): sets 9 fields: leadEmail, leadFirstName, leadLastName…
5. Configure Reply Settings (Edit Fields (Set)): sets 7 fields: companyName, senderName, whatWeDo…
6. If: checks a condition and branches into true / false
7. Draft Reply with Claude Agent (Anthropic): uses Anthropic
8. Prepare Email Content (Edit Fields (Set)): sets 11 fields: subject, bodyHtml, summary…
9. Slack: send and wait for a reply (message)
10. If: checks a condition and branches into true / false

…plus 4 more steps. See the full node list below.

Services it uses

HubSpotAnthropicGmailSlack

HTTP calls to: gmail.googleapis.com

Before you upgrade to n8n 3.0

Nodes used (10)

• Webhookn8n-nodes-base.webhook
• HubSpotn8n-nodes-base.hubspot
• Ifn8n-nodes-base.if
• Edit Fields (Set)n8n-nodes-base.set
• Anthropic@n8n/n8n-nodes-langchain.anthropic
• Gmailn8n-nodes-base.gmail
• Slackn8n-nodes-base.slack
• No Operation, do nothingn8n-nodes-base.noOp
• Coden8n-nodes-base.code
• HTTP Requestn8n-nodes-base.httpRequest

From the author

Quick overview This workflow listens for new HubSpot contacts created from form submissions, uses Anthropic Claude to draft a personalized first-response email, sends it via Gmail with your signature, logs the email on the HubSpot contact timeline, and alerts…

View the original on n8n.io → Check your own copy