What’s the best way to detect my leads inbox ESP in Clay?

Clay offers several email verification tools that can help identify email service providers: Hunter Email Validation - Provides detailed email analysis including whether an email is webmail (like Gmail, Yahoo) and checks MX records, SMTP servers, and domain information. Instantly Email Verification - Determines if an email has a valid inbox and identifies catch-all domains through their three-step verification process. Email Type Detection - Use our integration to extract company domains from email addresses and determine if they're work or personal emails. These tools analyze email domains and provide verification statuses that help you understand the email infrastructure and identify the underlying service provider.

Sources: Identify Email Type and Extract Company Domain from Email with Clay Validate Email with Hunter Instantly integration | Documentation | Clay University Email verification statuses | Documentation | Clay University