Email Format Finder
Use this free email format finder to discover the most common email patterns at any company. Enter a domain to see formats like first.last@, flast@, firstl@, and 30+ other variations — ranked by likelihood.
About This Tool
Every company follows a pattern for employee email addresses, and knowing that pattern is half the battle in B2B outreach. This email format finder analyzes a company domain and returns the most likely email conventions — ranked by how frequently each pattern appears across our database of 200M+ verified business emails. We tested this tool against 1,500 Fortune 5000 companies in February 2026 and correctly identified the primary email format 87% of the time on the first guess. For the remaining 13%, the correct format appeared in the top 3 suggestions. The tool checks 34 distinct format variations (including hyphenated names, middle initials, and department-based patterns like sales@) that most competitors miss entirely. Once you know the pattern, you can construct likely addresses for anyone at the company — though we always recommend verifying before sending, which Cleanlist handles automatically.
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How does the email format finder work?
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The email format finder analyzes a company domain against our database of 200M+ verified business emails. It identifies which format patterns (first.last@, flast@, firstl@, first_last@, and 30+ others) are used at that organization, then ranks them by likelihood. In our February 2026 benchmark across 1,500 companies, the top-ranked format was correct 87% of the time. This gives you a strong starting point — though we recommend verifying any constructed address before sending.
How accurate are the email format predictions?
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Pretty accurate for most companies. Our email format finder correctly identifies the primary pattern 87% of the time on the first suggestion, and the correct format appears in the top 3 results 97% of the time. That said, format prediction is not the same as email verification — a correctly formatted address can still bounce if the person has left the company. For confirmed deliverability, use Cleanlist's email verification which checks each address against real mail servers across multiple providers.
Can I use this to find a specific person's email?
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The email format finder shows the pattern a company uses, not individual addresses. Once you know the pattern (e.g., first.last@company.com), you can construct a likely address for any employee. For verified individual emails — confirmed via SMTP handshake and cross-referenced across 15+ providers — Cleanlist's People Search delivers triple-verified addresses with 98% accuracy. The format finder is the free starting point; People Search is the verified answer.