Yes, Hunter.io is a legitimate B2B email discovery and verification tool used by sales, marketing, and recruiting professionals worldwide. The platform holds a 4.4 out of 5 rating on G2, operates on publicly available data, and follows GDPR guidelines for data collection.
So what does Hunter actually do? It helps you find professional email addresses tied to company domains. You type in a name and company, and Hunter returns the most likely email address along with a confidence score—a number from 0 to 100 that tells you how likely that address is to be real and deliverable.
The tool crawls public web sources like company websites, press releases, and staff directories to build its database. This is standard practice across B2B data providers. Hunter focuses exclusively on business emails, not personal addresses like Gmail or Yahoo.



