Hunter API: Domain Search and Email Verification

This workflow automates email management using the Hunter API, supporting domain search, email finder, and email verification. Key nodes include Webhook Trigger (starts via POST), Input Validation (ensures valid action), Action Router (directs to domain_search/email_finder/email_verifier), Domain Search Validation (checks domain), Email Finder Validation (verifies domain/firstname/lastname), Email Verifier Validation (checks email), Sanitize Data nodes (set defaults), Hunter Domain Search/Email Finder/Email Verifier (perform operations), Success Response nodes (return results), and error nodes (General/Domain Search/Email Finder/Email Verifier/Hunter API Error) for handling failures.\n\nSetup Requirements and Configuration: Install n8n from n8n.io for self-hosting or sign up at cloud.n8n.io for cloud setup. Follow prompts or create a cloud account. Obtain a Hunter API key from hunter.io: sign up, navigate to 'API' in the dashboard, generate an API key, and copy it. In n8n, import the JSON workflow. Configure Hunter Domain Search, Email Finder, and Email Verifier nodes with the API key under ‘Credentials’ > ‘Hunter API.’ Set Webhook Trigger path to ‘hunter-automation,’ configure for POST requests, and add header authentication with a secure key (e.g., ‘Authorization: Bearer your-key’). Ensure server resources support API calls. Verify API key permissions for email operations.\n\nTesting and Deployment Steps: Test with Postman using a POST request to the Webhook URL. Example JSON: {'action': 'domain_search', 'domain': 'example.com', 'limit': 10} or {'action': 'email_finder', 'domain': 'example.com', 'firstname': 'John', 'lastname': 'Doe'} or {'action': 'email_verifier', 'email': 'john@example.com'} with authentication header. Success responses return 200 with domain/emails, email/score, or verification results. Error nodes return 400 for invalid inputs (e.g., missing/invalid domain/email) or 500 for API failures. Check logs for errors like ‘Invalid API key’ or ‘Domain not found,’ and verify the key or input format. Activate workflow in n8n. Validate output: ensure domain/emails, email/score, or verification status match inputs. Debug errors using n8n logs for rate limits or network issues.