Email Validation & Lead Scoring with Airtable, Clearbit & Slack

This workflow automates email validation and lead scoring, integrating with Airtable for storage and Slack for priority notifications. The Webhook node accepts POST requests with lead data, a Code node validates inputs and sanitizes data, an Airtable node stores initial data, a Mailcheck node verifies email deliverability, a Clearbit node enriches lead data, and subsequent nodes calculate lead scores and route leads for sales or nurturing. This optimizes lead processing for marketing teams handling 1,000+ leads monthly, enhancing efficiency for businesses with 20-100 team members.\n\nThis workflow saves 15-20 hours weekly for teams managing high-volume lead pipelines, improving lead qualification by 80%. Use cases include marketing campaign optimization, sales prospecting, or lead nurturing automation. Requires Airtable API (free with account), Mailcheck API ($0.01-$0.05/check), Clearbit API ($0.01-$0.02/lookup), Slack API (free), and n8n (free or cloud from $20/month). Scalable to 15,000 monthly leads with enterprise plans.\n\nThis workflow requires n8n setup via n8n.io download or cloud.n8n.io signup. Configure Airtable, Mailcheck, Clearbit, and Slack API credentials, stored as AIRTABLE_API_KEY, MAILCHECK_API_KEY, CLEARBIT_API_KEY, and SLACK_API_TOKEN. Import JSON, configure Webhook with POST and path 'lead-validation,' and integrate with your lead capture system. Customize DISPOSABLE_DOMAINS, CORPORATE_DOMAINS, and HIGH_VALUE_INDUSTRIES for scoring.\n\nThis workflow’s testing uses Postman with sample payloads (e.g., {email: 'example@domain.com', firstName: 'John', lastName: 'Doe', source: 'webform'}). Verify email validation, enrichment, scoring, and Slack notifications in n8n logs. Common errors: invalid API keys (regenerate in respective platforms), missing fields (ensure required inputs), or rate limits (adjust retry settings). Activate in production, monitor n8n dashboard. Maintain by auditing logs weekly, refreshing API keys quarterly, and scaling Airtable for high volumes.\n\nRequired Variables:\n- AIRTABLE_API_KEY: Airtable API key for data storage\n- MAILCHECK_API_KEY: Mailcheck API key for email validation\n- CLEARBIT_API_KEY: Clearbit API key for enrichment\n- SLACK_API_TOKEN: Slack API token for notifications\n- DISPOSABLE_DOMAINS: Comma-separated list of disposable email domains (e.g., 'mailinator.com,yopmail.com')\n- CORPORATE_DOMAINS: Comma-separated list of consumer email domains (e.g., 'gmail.com,yahoo.com')\n- HIGH_VALUE_INDUSTRIES: Comma-separated list of target industries (e.g., 'Technology,SaaS')\n- SENIOR_TITLE_PATTERN: Regex pattern for senior job titles (e.g., '(director|vp|chief)')", "businessValue": "Saves 15-20 hours/week automating 1,000+ lead validations, improving qualification by 80%", "setupTime": "45-60 minutes", "difficulty": "Intermediate", "requirements": ["Airtable API (free with account)", "Mailcheck API ($0.01-$0.05/check)", "Clearbit API ($0.01-$0.02/lookup)", "Slack API (free)", "n8n instance"], "useCase": "Automated email validation and lead scoring for enterprise marketing"