Send personalized job application emails with Telegram, OpenAI, and Gmail

Setup Guide - Hiring Bot Workflow []( 📋 Prerequisites Before importing this workflow, make sure you have: - ✅ n8n Instance (cloud or self-hosted) - ✅ Telegram Bot Token (from @BotFather) - ✅ OpenAI API Key (with GPT-4 Vision access) - ✅ Gmail Account (with OAuth setup) - ✅ Google Drive (to store your resume) - ✅ Redis Instance (free tier available at Redis Cloud) --- 🚀 Step-by-Step Setup 1️⃣ Upload Your Resume to OpenAI First, you need to upload your resume to OpenAI's Files API: Important: Save the fileid from the response (looks like file-xxxxxxxxxxxxx) Alternative: Use OpenAI Playground or Python: --- 2️⃣ Upload Your Resume to Google Drive 1. Go to Google Drive 2. Upload your resume PDF 3. Right-click → "Get link" → Copy the file ID from URL - URL format: - Example ID: 1h79U8IFtI2dpOBtnyhdGaarWpKb9qq9 --- 3️⃣ Create a Telegram Bot 1. Open Telegram and message @BotFather 2. Send /newbot 3. Choose a name and username 4. Save the Bot Token (looks like 123456789:ABCdefGHIjklMNOpqrsTUVwxyz) 5. (Optional) Set bot commands: --- 4️⃣ Set Up Redis Option A: Redis Cloud (Recommended - Free) 1. Go to Redis Cloud 2. Create a free account 3. Create a database 4. Note: Host, Port, Password Option B: Local Redis --- 5️⃣ Import the Workflow to n8n 1. Open n8n 2. Click "+" → "Import from File" 3. Select HiringBotAnonymized.json 4. Workflow will import with placeholder values --- 6️⃣ Configure Credentials A. Telegram Bot Credentials 1. In n8n, go to Credentials → Create New 2. Select "Telegram API" 3. Enter your Bot Token from Step 3 4. Test & Save B. OpenAI API Credentials 1. Go to Credentials → Create New 2. Select "OpenAI API" 3. Enter your OpenAI API Key 4. Test & Save C. Redis Credentials 1. Go to Credentials → Create New 2. Select "Redis" 3. Enter: - Host: Your Redis host - Port: 6379 (default) - Password: Your Redis password 4. Test & Save D. Gmail Credentials 1. Go to Credentials → Create New 2. Select "Gmail OAuth2 API" 3. Follow OAuth setup flow 4. Authorize n8n to access Gmail 5. Test & Save E. Google Drive Credentials 1. Go to Credentials → Create New 2. Select "Google Drive OAuth2 API" 3. Follow OAuth setup flow 4. Authorize n8n to access Drive 5. Test & Save --- 7️⃣ Update Node Values A. Update OpenAI File ID in "PayloadForReply" Node 1. Double-click the "PayloadForReply" node 2. Find this line in the code: 3. Replace with your actual OpenAI file ID from Step 1: 4. Save the node B. Update Google Drive File ID (Both "Download Resume" Nodes) There are TWO nodes that need updating: Node 1: "Download Resume" 1. Double-click the node 2. In the "File ID" field, click "Expression" 3. Replace YOURGOOGLEDRIVEFILEID with your actual ID 4. Update "Cached Result Name" to your resume filename 5. Save Node 2: "Download Resume1" (same process) 1. Double-click the node 2. Update File ID 3. Update filename 4. Save --- 8️⃣ Assign Credentials to Nodes After importing, you need to assign your credentials to each node: Nodes that need credentials: | Node Name | Credential Type | |-----------|----------------| | Telegram Trigger | Telegram API | | Generating Reply | OpenAI API | | Store AI Reply | Redis | | GetValues | Redis | | Download Resume | Google Drive OAuth2 | | Download Resume1 | Google Drive OAuth2 | | Schedule Email | Gmail OAuth2 | | SendConfirmation | Telegram API | | Send a message | Telegram API | | Edit a text message | Telegram API | | Send a text message | Telegram API | | Send a chat action | Telegram API | How to assign: 1. Click on each node 2. In the "Credentials" section, select your saved credential 3. Save the node --- 🧪 Testing the Workflow 1️⃣ Activate the Workflow 1. Click the "Active" toggle in the top-right 2. Workflow should now be listening for Telegram messages 2️⃣ Test with a Job Post 1. Find a job post online (LinkedIn, Indeed, etc.) 2. Take a screenshot 3. Send it to your Telegram bot 4. Bot should respond with: - "Analyzing job post..." (typing indicator) - Full email draft with confirmation button 3️⃣ Test Email Sending 1. Click "Send The Email" button 2. Check Gmail to verify email was sent 3. Check if resume was attached --- 🐛 Troubleshooting Issue: "No binary image found" - Solution: Make sure you're sending an image file, not a document Issue: "Invalid resume fileid" - Solution: 1. Check OpenAI fileid format (starts with file-) 2. Verify file was uploaded successfully 3. Make sure you updated the code in PayloadForReply node Issue: "Failed to parse model JSON" - Solution: 1. Check OpenAI API quota/limits 2. Verify model name is correct (gpt-5.2) 3. Check if image is readable Issue: Gmail not sending - Solution: 1. Re-authenticate Gmail OAuth 2. Check Gmail permissions 3. Verify "attachments" field is set to "Resume" Issue: Redis connection failed - Solution: 1. Test Redis connection in credentials 2. Check firewall rules 3. Verify host/port/password Issue: Telegram webhook not working - Solution: 1. Deactivate and reactivate workflow 2. Check Telegram bot token is valid 3. Make sure bot is not blocked --- 🔐 Security Best Practices 1. Never share your credentials - Keep API keys private 2. Use environment variables in n8n for sensitive data 3. Set up Redis password - Don't use default settings 4. Limit OAuth scopes - Only grant necessary permissions 5. Rotate API keys regularly 6. Monitor usage - Check for unexpected API calls --- 🎨 Customization Ideas Change AI Model In the PayloadForReply node, update: Adjust Email Length Modify the system prompt: Add More Languages Update language detection logic in the system prompt to support more languages. Custom Job Filtering Edit the system prompt to target specific roles: Add Follow-up Reminders Add a "Wait" node after email sends to schedule a reminder after 7 days. --- 📊 Workflow Structure --- 💡 Tips for Best Results 1. High-Quality Resume: Upload a well-formatted PDF resume 2. Clear Screenshots: Take clear, readable job post screenshots 3. Use Captions: Add instructions via Telegram captions - Example: "make it more casual" - Example: "send to recruiter@company.com" 4. Review Before Sending: Always read the draft before clicking send 5. Update Resume Regularly: Keep your Google Drive resume current 6. Test First: Try with a few test jobs before mass applying --- 🆘 Need Help? - 📚 n8n Documentation - 💬 n8n Community Forum - 📺 n8n YouTube Channel - 🤖 OpenAI Documentation - 📱 Telegram Bot API Docs --- 📝 Checklist Use this checklist to verify your setup: - [ ] OpenAI resume file uploaded (got fileid) - [ ] Google Drive resume uploaded (got file ID) - [ ] Telegram bot created (got bot token) - [ ] Redis instance created (got credentials) - [ ] All n8n credentials created and tested - [ ] PayloadForReply node updated with OpenAI fileid - [ ] Both Download Resume nodes updated with Drive fileid - [ ] All nodes have credentials assigned - [ ] Workflow activated - [ ] Test message sent successfully - [ ] Test email received successfully --- 🎉 You're all set! Start applying to jobs in 10 seconds! Made with ❤️ and n8n