EmailKingCompany Email Formats: The 8 Most Common Patterns and How to Find Any Company's
If you know someone's name and where they work, you're usually one pattern away from their email address. Companies pick a format once and apply it to everyone. The catch is working out which format, and remembering that a correctly guessed address still isn't a confirmed one.
The 8 most common formats
Using the example Jane Doe at acme.com:
| Pattern | Example | Typical for |
|---|---|---|
first.last |
[email protected] | Mid-size and large companies; the most common corporate format |
first |
[email protected] | Startups and small teams |
flast |
[email protected] | Older enterprises, universities |
first.l |
[email protected] | Companies that grew and hit name collisions |
f.last |
[email protected] | Common in Europe |
firstlast |
[email protected] | Small businesses |
last.first |
[email protected] | Some companies in Asia and the public sector |
first_last |
[email protected] | Less common today |
Large organizations add wrinkles: numbers for duplicate names (jane.doe2@), regional subdomains ([email protected]), or a different domain for email than for the website (acme.com vs acme-corp.com).
How to work out a specific company's pattern
1. Find any real address from the same company. One confirmed address reveals the pattern for everyone. Good places to look:
- the company's own website: team pages, press pages, blog author bios, the imprint or legal page;
- press releases (media contacts are usually real people);
- conference speaker pages, podcast show notes, GitHub commit emails, published papers.
2. Look at several addresses, not one. A single info@ or press@ tells you nothing about personal addresses. You want two or three personal addresses to be confident.
3. Check the email domain has mail at all. Look up the domain's MX records. If there are none, the company receives mail somewhere else (a parent company domain, for example).
4. Apply the pattern — and treat the result as a guess. Until the address shows up somewhere public or a verification check passes, it's a hypothesis.
Why guessed addresses are risky
- Catch-all domains accept every address, so you can't confirm the guess before sending. See what catch-all means.
- Name variations: nicknames (Bob vs Robert), hyphenated names, accents and transliterations.
- People leave. The pattern stays correct while the person is gone.
Guessed addresses are the biggest single source of hard bounces in cold outreach. If you use them, keep them in a separate segment and send in small batches. Our bounce rate guide covers the thresholds.
Using EmailKing to discover a company's pattern
The quickest way to learn a company's format is to see the addresses it already publishes. Paste the company's website into EmailKing and it pulls every address it can find on the page, plus the contact, about and team pages if the main page has none. That includes mailto: links, obfuscated text and Cloudflare-protected addresses. A couple of personal addresses in the results is usually enough to see the pattern.
EmailKing doesn't generate or guess addresses for you. Every address it returns was actually published on the site, and each one is checked for valid syntax and a working mail domain.
Frequently Asked Questions
What's the most common company email format?
[email protected] is the most common format at established companies. Very small companies and startups often use just [email protected].
Can I verify a guessed address before sending?
Partly. You can confirm the domain accepts mail (MX records). Some servers also answer mailbox-level checks, but catch-all domains and large providers make that unreliable. Addresses you found published somewhere are always safer than guessed ones.
Is it okay to email someone at a guessed address?
Legally, the same rules apply as for any cold email in that country. See our cold email legal guide. Practically, only do it when your message is clearly relevant to the person's role, and remove them immediately if they ask.
Why does a company use a different email domain than its website?
Rebrands, acquisitions and regional entities. The website might be acme.io while email still runs on acmecorp.com. Addresses published on the website usually reveal this.
Next Steps
- See the addresses a company publishes: paste its site at emailking.io.
- Finding a specific person? Read how to find anyone's email.