Email Provider Lookup

Enter any domain to identify its email provider. No signup required.

Try:

What this tool detects

This free lookup queries the domain's MX and SPF records to identify the email provider powering it. It distinguishes between 150+ providers including Google Workspace, Microsoft 365, Zoho, Fastmail, OVH, and more.

Unlike email verification, this tool never contacts the mail server. It performs passive DNS analysis only — safe, fast, and GDPR-compliant.

Need more than 5 lookups?

Sign up for a free API key to get 100 requests/month with full classification, provider detection, and company enrichment.

Get Free API Key