API Tools

Detect whether a domain's mail server accepts all email addresses

Validate up to 50 email addresses in one request

Full email validation with syntax, MX, SMTP, and deliverability checks

Get the Gravatar image URL and profile for an email address

Normalize an email address by handling dots, plus-aliases, and case

Identify the email provider for a domain based on MX records

Detect whether an email address is a role/group account or personal mailbox

Parse raw email headers to extract routing, authentication, and spoofing indicators

Build or parse RFC 6068 mailto: URIs

Score email content for spam signals using heuristic rules

Validate email authentication — SPF, DKIM, and DMARC from raw headers.

Comprehensive email security audit — SPF, DMARC, DKIM, MTA-STS, TLS-RPT, BIMI.