Free Email Verification Tools
The same detection engine behind RocketVerifier's paid API, available as free browser tools. No account, no credit card — fair-use limits apply, no signup needed.
Free Email Verifier
Check syntax and DNS/MX records for any email address in seconds, free.
Disposable Email Checker
See if an email or domain belongs to a known temporary/disposable provider.
MX Lookup
Look up MX records for any domain to confirm it can receive email.
Email Deliverability Checker
Score SPF, DKIM, and DMARC for a domain and get concrete fix recommendations.
Prefer to use these tools from an AI assistant?
RocketVerifier ships an official MCP (Model Context Protocol) server — every free tool above, plus full email verification, is available as a tool call inside Claude, ChatGPT, and Cursor.
Need Full SMTP Verification?
These free tools check syntax and DNS. For live mailbox verification with a confidence score, create a free account — 100 credits included, no credit card required.