Hunter.io

What it does

Type a domain, get verified emails with confidence scores

Hunter.io finds the email address format and specific addresses associated with a company domain. Enter a company name or website and it returns emails found through public sources, along with a confidence score for accuracy. It also works in reverse: verify a specific email you already have.

It shows the source URL where each email was found, so you can judge how current the data likely is. There's a Chrome extension for finding emails while browsing LinkedIn or a company site, a bulk and API mode, and a lightweight outreach sequencer.

It does not do phone numbers, LinkedIn profile scraping, or deep company enrichment. It's narrowly an email-address tool.