Email Format Finder
Email Format FinderUse 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.
Find a company's email format
To find someone's email format, enter the company domain and the tool returns the patterns that organization uses (first.last@, flast@, and 30+ more), ranked by likelihood. It identifies the primary format correctly 87% of the time on the first guess. Verify the constructed address before sending, since format prediction is not deliverability.
Stop guessing email formats
This finds the likely pattern. Cleanlist finds and verifies the real, deliverable address through a multi-provider waterfall, at 1 credit per verified email. Start the 14-day trial, no card.
- 25+providers in one waterfall lookup, priced as one result
- 98%verified work email on a 500-lead stratified test
- 85%direct dial on that same 500-lead test
- 0credits to search. Free and unlimited on every plan
You found one company's format. Upload a CSV and get the verified address for every contact on the list. 250 credits, 3 seats, 14 days. No card required.
How Does This Tool Work?
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 public sources and provider data.
Format prediction is probabilistic: the most common convention is usually right, but a prediction is never proof an address exists. 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. For example: a search for google.com returns first.lastname@ as the top match, followed by flastname@ and lastname.first@. A search for a smaller company often surfaces less standard patterns (firstname@ or first_last@) that you would have spent 20 minutes guessing on LinkedIn.
That guesswork costs time and risks sender reputation, every email you send to a malformed or non-existent address counts as a bounce. The format finder gives you the pattern in under a second, and once you have the pattern, the free email verifier confirms whether the specific constructed address is deliverable before you press send.
Together the two free tools replace the slow loop of: open LinkedIn → guess format → send email → wait two days → see the bounce. That said, format prediction is a probability not a guarantee, for verified individual addresses at scale, Cleanlist's waterfall enrichment cross-checks across 25+ providers per lookup and returns triple-verified emails with 98% accuracy.
Who Uses the Email Format Finder?
Teams across go-to-market rely on clean, verified data. Here is where this tool fits.
Sales teams
Stop wasting reps' time on dead leads and bad data before outreach.
Marketers
Clean lists before a campaign to protect deliverability and spend.
Recruiters
Confirm candidate contact details are real before reaching out.
Founders
Validate key contacts before emailing partners, investors, or buyers.
RevOps
Keep the CRM accurate so routing, scoring, and reporting hold up.
Agencies
Double-check client data before it ever touches a live campaign.
What Can the Full Platform Do in 5 Minutes?
This free tool is the tip of Cleanlist. Watch a real ICP search go from query to enriched, validated, CRM-ready list in under five minutes. 36 leads, 100% contact fill, synced to HubSpot.
36 ICP leads, 100% contact fill, validated and pushed to HubSpot in one flow
Get contact data where you already prospect
The Cleanlist Chrome extension pulls verified emails and direct-dial phone numbers off LinkedIn profiles and search results without leaving the tab. Every new workspace starts on Scale for 14 days (250 credits, 3 seats, no card), and the extension stays available afterwards on the $0 Free plan at 30 credits a month.
Which Cleanlist Plan Do You Need?
Annual billing takes 25% off every paid plan. Search is free and unlimited on all four: a verified work email is 1 credit however many providers it took, a direct dial 10, both together 11, validation 0.5, AI qualification 5. A miss costs nothing, and the credits sit in one shared team wallet.
Frequently Asked Questions
How does the email format finder work?
The email format finder analyzes a company domain against email format patterns observed across public sources and provider data. It identifies which format patterns (first.last@, flast@, firstl@, first_last@, and 30+ others) are used at that organization, then ranks them by likelihood. The top-ranked format is a strong starting point, though we recommend verifying any constructed address before sending.
How accurate are the email format predictions?
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?
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 25+ 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.
What email format do Google, Microsoft, Apple, and other large companies use?
Most of the largest tech companies use first.lastname@ as their primary employee email format. Per publicly observed conventions, Google (first.lastname@google.com), Microsoft (first.lastname@microsoft.com), Apple (firstname.lastname@apple.com), Meta (first.lastname@meta.com), Amazon (first.lastname@amazon.com), and Salesforce (flastname@salesforce.com) all followed first-and-last conventions. Smaller tech companies and startups skew toward firstname@ or flastname@ formats. Enterprise companies in finance and law more often use flastname@ or lastnamef@ patterns. Enter any domain in the tool above to see the specific pattern that company uses, ranked by confidence, without having to guess.
How do I find the email format for a private company?
Private companies without a strong online footprint are where most format finders fail. Our tool checks 34 pattern variations against any web traces (employee press releases, conference speaker bios, SEC filings, support page contacts, archived directory listings) plus the email patterns observed across provider data. If the company has at least a handful of public-facing employees, the format usually surfaces. For genuinely cold private companies with no online employee footprint, the tool returns the patterns most common for a company of that industry and size, typically first.lastname@ or flastname@ as the two most likely starting points. From there, verify the constructed address before sending to confirm it actually reaches the mailbox.
Which Free Email Lookup Tools Work Together?
Free, purpose-built tools that work together. Start from a name, a domain, an email, or a block of text, and move to a verified contact.
- Reverse Email LookupStart with an email address and find the name, company, and public profile behind it.
- Email PermutatorGenerate every likely address for a person from their name and company domain.
- B2B Contact FinderFind business contacts and predicted email patterns by company domain.
- LinkedIn Email FinderGet the likely work email behind a LinkedIn profile, ranked and MX-checked.
- Email VerifierCheck whether any address is deliverable before you send, with syntax, DNS, and MX checks.
- Email ExtractorEnter a website URL or paste text and pull out every email address on it, deduped.
Which Tool Should You Buy for This at Scale?
Independent comparisons of the platforms that do this job on a whole database, including where Cleanlist fits and where it does not.
Gain full access for 14 days.
250 credits, 3 seats, no card needed. Access to every feature except public API & MCP.
Cleanlist finds, verifies and enriches contact data, and syncs it two ways with HubSpot, Salesforce and Pipedrive, or one way out to Outreach, Salesloft and Lemlist. Cleanlist does not send email.