Screen resumes with GPT-4 Turbo from Gmail and send shortlisted to Slack

AI Resume Screening Workflow using Gmail, OpenAI (GPT-4 Turbo) & Slack

This workflow automatically fetches resumes from Gmail, extracts text from PDF attachments, analyzes candidate profiles using AI, and shortlists qualified candidates by sending their details to Slack. It significantly reduces manual effort in resume screening and speeds up hiring decisions.

Quick Implementation Steps

1. Connect your Gmail account in n8n
2. Connect your OpenAI API (GPT-4 Turbo)
3. Connect your Slack account
4. Ensure resumes are received as PDF attachments in Gmail
5. Update job requirements inside the AI Resume Analyzer node
6. Run the workflow manually or activate it

What It Does

This workflow automates the resume screening process by integrating Gmail, AI, and Slack into a seamless pipeline. It starts by fetching emails containing resume attachments, then processes and validates these files to ensure only PDF resumes are analyzed.

Once validated, the workflow extracts text from each resume and sends it to an AI model. The AI evaluates candidate details such as skills, experience, and contact information, and calculates a match score based on predefined job requirements.

Finally, the workflow determines whether a candidate should be shortlisted or rejected. Shortlisted candidates are instantly shared on Slack with complete details, enabling faster hiring decisions and reducing manual screening effort.

Who’s It For

• HR teams and recruiters
• Hiring managers
• Startups handling large volumes of applications
• Recruitment agencies
• Businesses looking to automate candidate screening

Requirements to Use This Workflow

• n8n (self-hosted or cloud)
• Gmail account (OAuth connected)
• OpenAI API key (GPT-4 Turbo access)
• Slack account (with channel access)
• Resumes in PDF format
• Basic understanding of n8n workflows

How It Works & Set Up

Setup Instructions

1. Manual Trigger Setup

Use the Start Workflow Manually node to initiate the workflow.

1. Gmail Configuration

Connect your Gmail account in the Fetch Gmail node. Ensure emails contain resume attachments.

1. Attachment Processing

The workflow formats and checks attachments. Only emails with attachments proceed further.

1. PDF Validation

Ensure resumes are in PDF format. Non-PDF files are ignored automatically.

1. Text Extraction

The Extract Resume Text node converts PDF resumes into plain text.

1. AI Configuration

Add your OpenAI credentials in the OpenAI Chat Model node. Customize job requirements inside the AI Resume Analyzer node prompt.

1. Evaluation Logic

Candidates are scored based on:

• Skills (50%)
• Experience (30%)
• Location (20%)

1. Output Handling

If score ≥ 70 → Sent to Slack as shortlisted. Else → Marked as rejected

1. Activate Workflow

Run manually or activate for continuous use.

How To Customize Nodes

• AI Resume Analyzer - Modify job requirements (skills, experience, location). Adjust scoring logic or threshold

• Evaluate Candidate Score - Change minimum score (default: 70)

• Slack Node - Customize message format. Change Slack channel

• Gmail Node - Add filters (labels, subjects, senders)

• Extract Resume Text - Extend for other file formats if needed

1.8 Add-ons (Enhancements)

• Store shortlisted candidates in Google Sheets or database
• Send rejection emails automatically
• Add ATS (Applicant Tracking System) integration
• Include resume ranking system
• Add duplicate candidate detection
• Enable multi-role job matching

1.9 Use Case Examples

• Automating resume screening for tech hiring
• Filtering candidates for specific skill sets (e.g., React Native developers)
• Handling bulk job applications efficiently
• Shortlisting candidates for remote roles
• Pre-screening candidates before interviews

There can be many more use cases depending on hiring workflows and business needs.

1.10 Troubleshooting Guide

Issue	Possible Cause	Solution
No emails fetched	Gmail not connected or incorrect filters	Reconnect Gmail and check filters
Attachments not processed	Emails don’t contain attachments	Ensure resumes are attached
PDF not detected	Incorrect file type	Ensure resumes are in PDF format
AI response parsing error	Invalid JSON from AI	Check prompt and enforce strict JSON
No Slack message	Slack credentials or channel issue	Verify Slack connection and channel ID
Low-quality matches	Incorrect job requirements	Update AI prompt with accurate criteria

Need Help?

If you need assistance setting up this workflow or customizing it for your business needs, we’re here to help.

Whether you want to:

• Extend this workflow with advanced features
• Integrate it with your existing systems
• Build similar automation solutions

Feel free to reach out to our n8n workflow development experts at WeblineIndia for expert support and tailored workflow development.

👉 Let us help you automate smarter and scale faster.