MailRook Email Validation
Validate any email. Detect fraud. Enrich the data.
MailRook Email Validation is a validation service that checks whether an email address is deliverable, whether it belongs to a disposable or fraudulent source, and what domain intelligence sits behind it. It is designed to answer questions at signup, before sending outreach, or when cleaning an existing list, returning a verdict, a score, and itemised reasons in a single response.
The service runs real-time SMTP verification alongside syntax, MX, catch-all, role-account, and disposable-address checks. It fingerprints ten enterprise email gateways such as Proofpoint, Mimecast, and Barracuda, and returns domain profile fields including domain age, registrar, ASN, MX provider, and SPF/DMARC posture. Results are available through a REST API, an MCP server for AI agents, a web interface, and bulk CSV upload, with 30 or more data fields per check.
MailRook Email Validation targets signup and checkout teams, cold outreach and SDR teams, marketing operations and list cleaners, and developers integrating validation into applications. It offers a free plan with daily checks and no credit card required, alongside paid editions with monthly validation allowances and additional validations billed on a usage basis.
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