Automatically reply to cold emails with GPT-4 & Instantly.ai

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

AI Powered Workflow for Auto Responding to Positive Cold Email Replies This workflow is designed for agencies , freelancers , and sales teams who want to turn positive cold email replies into booke...

Best for

Lead Nurturing automation workflows
Multimodal AI automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.webhook, n8n-nodes-base.set, n8n-nodes-base.httprequest, @n8n/n8n-nodes-langchain.openai, n8n-nodes-base.code, n8n-nodes-base.stickynote

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Shahrukh.

Original n8n.io source

1.1 Workflow description

Title: Automatically reply to cold emails with GPT-4 & Instantly.ai
Workflow name: Automatically reply to cold emails with GPT-4 & Instantly.ai

AI-Powered Workflow for Auto-Responding to Positive Cold Email Replies

This workflow is designed for agencies, freelancers, and sales teams who want to turn positive cold email replies into booked meetings automatically—without hiring VAs or spending hours on manual responses.

❓ The Problem

Most teams waste time replying manually or pay for virtual assistants, leading to delays and missed opportunities.
This template eliminates that bottleneck.

✅ What the Workflow Does

Detects positive replies from Instantly.ai campaigns
Uses AI to analyze intent and craft natural, human-like responses
Adds personalization to keep replies authentic
Includes Calendly links, product docs, or FAQs based on the lead’s intent
Sends responses instantly—so you never miss a hot lead again

No robotic AI text. Just smooth, human-style emails that get booked calls faster.

👥 Who is This For?

Agencies running Instantly.ai or similar outbound tools
Founders handling their own cold email outreach
Sales teams looking to automate follow-up and booking
Anyone who gets 5–20 positive replies a week and wants to 2x–4x conversions

✅ Requirements

n8n (Cloud or self-hosted)
Instantly.ai account with API access
OpenAI API key (stored securely in n8n credentials)
(Optional) Calendly or booking link, Notion or Google Docs for resources

⚙️ How to Set Up

Import the workflow into n8n
Add your Instantly.ai API credentials and OpenAI key using n8n’s credential manager
Customize the AI prompt for your tone, CTA, and offer
Insert your Calendly or booking link in the response template
Test with one positive reply to confirm filtering and response quality
Activate the workflow to auto-reply in real time

🔧 How to Customize

Adjust the filtering logic for different keywords or intent signals
Add branching for multiple booking links (e.g., based on region or service type)
Push responses to a CRM for tracking
Include extra resources like case studies or pricing docs

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Webhook

Type / Role: n8n-nodes-base.webhook - webhook
Config choices: Version 2

Block 2 - Edit Fields

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 3 - Get_ALL_Data

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 4 - HTTP Request2

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 5 - Write_message

Type / Role: @n8n/n8n-nodes-langchain.openAi - openAi
Config choices: Version 1.8

Block 6 - Match_values

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 7 - Code1

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 8 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 9 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 10 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

3. Summary Table

Workflow	Automatically reply to cold emails with GPT-4 & Instantly.ai
Complexity	intermediate
Nodes	10
Categories	Lead Nurturing, Multimodal AI
Author	Shahrukh
Published	05 Jul 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/5700/5700.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Lead Nurturing workflows Multimodal AI workflows

Frequently asked questions

What does Automatically reply to cold emails with GPT-4 & Instantly.ai do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Lead Nurturing, Multimodal AI use case.

Shahrukh

3 workflows

Nodes

n8n-nodes-base.webhook n8n-nodes-base.set n8n-nodes-base.httprequest @n8n/n8n-nodes-langchain.openai n8n-nodes-base.code n8n-nodes-base.stickynote

Complexity

intermediate

Published 05 Jul 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/5700/5700.json

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Automatically reply to cold emails with GPT-4 & Instantly.ai

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

AI-Powered Workflow for Auto-Responding to Positive Cold Email Replies

❓ The Problem

✅ What the Workflow Does

👥 Who is This For?

✅ Requirements

⚙️ How to Set Up

🔧 How to Customize

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Webhook

Block 2 - Edit Fields

Block 3 - Get_ALL_Data

Block 4 - HTTP Request2

Block 5 - Write_message

Block 6 - Match_values

Block 7 - Code1

Block 8 - Sticky Note

Block 9 - Sticky Note1

Block 10 - Sticky Note2

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions