Know what the company sells, who it sells to and how — from one email address.
Every address comes back with the company's sector and niche, read from its own homepage, whether it sells to consumers or businesses, and how it sells — plus the tech it runs, its company record, DNS and WHOIS. Segment lists and route sequences on answers a single "Industry" field can't give you.
Lanolin Lip Balm & Skincare
An "Industry" field puts all three of these in beauty, and so does our sector. The rows under it are what tell you who you're actually writing to.
Illustrative. Run any of them through the free enrichment tool for the live answer.
One email address or domain in, one company profile out: what the company does, the tech it runs, and everything about the domain.
What the company actually does, read from its own homepage rather than a years-old directory entry. Four answers, each a stable key you can store in a CRM field or a CSV column.
Every answer says how sure it is. Nothing is forced into a category to look complete.
Firmographics on file for the domain.
Technologies detected on the domain's website.
Domain infrastructure and email authentication.
Domain registration and ownership data.
Website status and content information.
Use the dashboard, REST API, or connect your AI assistant via MCP.
Enrich one address or a whole list from the MailRook dashboard, and export sector, niche and model as CSV columns.
One call returns structured JSON with every data point. Ask for ?fields=category when that's all you need.
Ask your AI assistant to enrich contacts in natural language. Works with Claude, Cursor, and any MCP client.
MCP setup guideFree accounts include email validation and contact enrichment, company category included. No credit card required.