Generate & enrich LinkedIn leads with Apollo.io, LinkedIn API, Mail.so & GPT-3.5

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2/3/2026

Note: Now includes an Apify alternative for Rapid API (Some users can't create new accounts on Rapid API, so I have added an alternative for you. But immediately you are able to get access to Rapid API, please use that option, it returns more detailed data). Scroll to bottom for APify setup guide

This n8n workflow automates LinkedIn lead generation, enrichment, and activity analysis using Apollo.io, RapidAPI, Google Sheets and Mail.so.

Perfect for sales teams, founders, B2B marketers, and cold outreach pros who want personalized lead insights to drive better conversion rates.

⚙️ How This Workflow Works

The workflow is broken down into several key steps, each designed to help you build and enrich a valuable list of LinkedIn leads:

1. 🔑 Lead Discovery (Keyword Search via Apollo)

Pulls leads using Apollo.io's API based on keywords, industries, or job titles.
Saves lead name, title, company, and LinkedIn URL to your Google Sheet.
You can replace the trigger node from the form node to a webhook, whatsapp, telegram, etc, any way for you to send over your query variables over to initiate the workflow.

2. 🧠 Username Extraction (from LinkedIn URL)

Extracts the LinkedIn username from profile URLs using a simple script node.
This is required for further enrichment via RapidAPI.

3. ✉️ Email Lookup (via Apollo User ID)

Uses the Apollo User ID to retrieve the lead’s verified work email.
Ensures high-quality leads with reliable contact info.
To double check that the email is currently valid, we use the mail.so api and filter out emails that fail deliverability and mx-record check. We don't wanna risk sending emails to no longer existent addresses, right?

4. 🧾 Profile Summary Enrichment (via RapidAPI)

Queries the LinkedIn Data API to fetch a lead’s profile summary/bio.
Gives you a deeper understanding of their background and expertise.

5. 📰 Recent Activity Collection (Posts & Reposts)

Retrieves recent posts or reposts from each lead’s profile.
Great for tailoring outreach with reference to what they’re currently talking about.

6. 🗂️ Leads Database Update

All enriched data is written to the same Google Sheet.
New columns are filled in without overwriting existing data.

✅ Smart Retry & Row Status Logic

Every subworkflow includes a fail-safe mechanism to ensure:

✅ Each row has status columns (e.g., done, failed, pending).
🕒 A scheduled retry workflow resets failed rows to pending after 2 weeks (customizable).
💬 This gives failed enrichments another chance to be processed later, reducing data loss.

📋 Google Sheets Setup

Template 1: Apollo Leads Scraping & Enrichment

Template 2: Enriched Leads Database

Make a copy to your Drive and use.

Columns will be filled as each subworkflow runs (email, summary, interests, etc.)

🔐 Required API Keys

To use this workflow, you’ll need the following credentials:

🧩 Apollo.io

Sign up and get your key here: Apollo.io API Keys
⚠️ Important: Toggle the “Master API Key” option to ON when generating your key.
This ensures the same key can be used for all Apollo endpoints in this workflow.

🌐 RapidAPI (LinkedIn Data API)

Subscribe to the API here: LinkedIn Data API on RapidAPI
Use the key in the x-rapidapi-key header in the relevant nodes.

✉️ Mail.so

> 💡 For both APIs, set up the credentials in n8n as “Generic Credential” types.
This way, you won’t need to reconfigure the headers in each node.

🛠️ Customization Options

Modify the Apollo filters (location, industry, seniority) to target your ideal customers.
Change retry interval in the scheduler (e.g., weekly instead of 2 weeks).
Connect the database to your email campaign tool like Mailchimp or Instantly.ai.
Replace the AI nodes with your desired AI agents and customize the system messages further to get desired results.

🆕 Apify Update Guide

To use this workflow, you’ll need the following credentials:

Click on integrations and scroll down to API Solutions and select "Use API endpoints". Scroll to "Run Actor synchronously and get dataset items" and copy the actor endpoint url then paste it in the placeholder inside the http node of Apify alternative flow "apify-actor-endpoint". That's it, you are set to go.

I am available for custom n8n workflows, if you like my work, please get in touch with me on email at joseph@uppfy.com

n8n Workflow: Generate & Enrich LinkedIn Leads

This n8n workflow is designed to automate the process of generating and enriching LinkedIn leads. It leverages a combination of data sources and AI capabilities to provide comprehensive lead information.

What it does

This workflow performs the following key steps:

Triggers: The workflow can be initiated in one of three ways:
- Google Sheets Trigger: Listens for changes or new rows in a specified Google Sheet, likely containing initial lead data (e.g., company names, job titles).
- Schedule Trigger: Runs at predefined intervals (e.g., daily, weekly) to process leads.
- n8n Form Trigger: Initiates the workflow upon submission of an n8n form, allowing for manual input of lead generation requests.
Initial Lead Data (Google Sheets): If triggered by Google Sheets, it reads data from a Google Sheet, which serves as the starting point for lead generation.
Data Transformation (Edit Fields): Prepares the incoming data for further processing, potentially renaming fields or setting default values.
Code Execution: Executes custom JavaScript code, likely to perform complex data manipulation, formatting, or to prepare prompts for the AI.
AI Enrichment (OpenAI): Sends lead data to OpenAI (e.g., ChatGPT) to generate or enrich information. This could involve:
- Generating potential LinkedIn search queries.
- Inferring additional lead details based on existing data.
- Creating personalized outreach messages.
Conditional Logic (If): Based on the results from the OpenAI enrichment, the workflow branches. This could be to:
- Filter out leads that don't meet certain criteria.
- Route leads for different types of enrichment or actions.
HTTP Request (API Calls): Makes HTTP requests to external APIs. This is where the workflow would interact with services like Apollo.io or a LinkedIn API (if available and configured) to:
- Search for LinkedIn profiles.
- Retrieve additional contact information (email, phone).
- Verify lead data.
Data Transformation (Split Out): If the API responses contain nested arrays or multiple items per lead, this node splits them into individual items for easier processing.
Data Merging (Merge): Combines data from different branches or steps, ensuring all relevant information for a lead is consolidated.
Final Output (Google Sheets): Writes the enriched lead data back to a Google Sheet, providing a centralized and updated list of leads.

Prerequisites/Requirements

To use this workflow, you will need:

n8n Instance: A running n8n instance.
Google Account: For Google Sheets integration.
OpenAI API Key: For AI-powered lead generation and enrichment.
Apollo.io Account (Optional, via HTTP Request): If the HTTP Request node is configured to use Apollo.io for lead data.
LinkedIn API Access (Optional, via HTTP Request): If the HTTP Request node is configured to interact with LinkedIn for data. (Note: Direct LinkedIn API access for scraping is often restricted; this would likely rely on a third-party service or a custom integration).
Credentials: Appropriate credentials configured in n8n for Google Sheets, OpenAI, and any other external APIs used by the HTTP Request nodes.

Setup/Usage

Import the Workflow: Download the JSON provided and import it into your n8n instance.
Configure Credentials:
- Set up your Google Sheets credentials.
- Set up your OpenAI API key credential.
- Configure any necessary HTTP Request credentials for Apollo.io, LinkedIn API, or other services.
Configure Nodes:
- Google Sheets Trigger/Node: Specify the spreadsheet ID and sheet name for your lead input and output.
- Schedule Trigger: Adjust the schedule to your desired frequency.
- n8n Form Trigger: Customize the form fields as needed.
- Code Node: Review and adjust the JavaScript code if you need to change data processing logic or AI prompts.
- If Node: Modify the conditions to match your lead qualification criteria.
- HTTP Request Nodes: Update the URLs, headers, and body of the requests to interact with your specific lead enrichment services (e.g., Apollo.io, custom LinkedIn API wrappers).
Activate the Workflow: Once configured, activate the workflow to start automating your lead generation and enrichment process.

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