Email Format Finder and Email Permutator
Enter a person’s first and last name and the company domain to get every likely email address, most likely first. Pick the company size and the list follows the formats companies of that size use, such as first.last, flast or first, with the share of companies using each. Free, no sign-up, nothing is sent.
The list updates as you type. It shows formats, not checked mailboxes: confirm the address with an email checker or a real address of a colleague before you send.
Most common company email formats
Share of companies using each format, by number of employees (Interseller, more than 5 million companies; “—” means it is not in the top five for that size).
| Format | Example | 1–10 | 51–200 | 10,001+ |
|---|---|---|---|---|
| first.last | jane.doe@acme.com | 9.82% | 30.45% | 56.31% |
| flast | jdoe@acme.com | 12.57% | 41.76% | 21.75% |
| first | jane@acme.com | 71.48% | 16.99% | 6.57% |
| firstlast | janedoe@acme.com | 1.43% | 1.83% | 3.4% |
| firstl | janed@acme.com | — | 3.56% | — |
| first_last | jane_doe@acme.com | — | — | 3.55% |
| last | doe@acme.com | 1.98% | — | — |
How to find a company’s email format
Search the company’s website, press releases and job posts for any address of a real person: one example is enough to see the pattern. Sales and press contacts on the site often use the same format as everyone else. If you find none, use the company size: small firms mostly use the first name, mid-size companies the first initial and last name, and large ones first.last. Then check the top two or three addresses with an email verifier before you add them to a sequence.
After you find the address
Write a short, personal first email with one clear question. Put a tidy email signature under it, and tag the links in it with the UTM builder to see which emails bring visits.
Frequently asked questions
What is the most common email format?
It depends on the size of the company. In Interseller’s study of more than 5 million companies, firms with up to 50 people mostly use the first name only (jane@), companies with 51 to 1,000 people most often use the first initial and last name (jdoe@), and companies with more than 1,000 people use first.last (jane.doe@).
How do I find someone’s work email address?
Find the company’s domain on its website. Then look for any real address of someone who works there, in a press release, a blog post or a signature, to see the format the company uses, and apply it to the person’s name. Without one, start with the most likely formats for the company size in the list above.
What is an email permutator?
An email permutator takes a person’s first and last name and a company domain and writes out every common way to combine them into an address: jane.doe@, jdoe@, jane@, janedoe@, doe@ and so on. You then check which of them exists, so you do not have to type each guess by hand.
Does this tool check whether the address exists?
No. It does not connect to mail servers or look anything up: it lists the likely formats in order. Before you send, check the address with an email verification service or find a real address of a colleague to confirm the format, so your emails do not bounce and hurt your sender reputation.
How are accents, hyphens and double names handled?
Addresses almost always use plain a–z letters, so accents are dropped (José becomes jose, Müller becomes muller), ß becomes ss, and spaces, hyphens and apostrophes are removed (O’Neil-Smith becomes oneilsmith). If a company keeps hyphens or a second surname, type the name the way you expect it in the address.
Which email addresses should my own company use?
Give each person first.last or the first name only if the team is small, and keep one format for everyone so people can guess it. Add shared addresses for teams, such as sales@, info@ and support@: these role names are standard and listed in RFC 2142.
Is anything I type stored or sent?
No. The list is built in your browser, and what you typed is saved only in this browser so the form is filled next time. Nothing is sent to SalesBond or anyone else. Click Start over to clear it.
Related tools: email signature generator, business card maker, UTM builder. More on sales and running a sales team on the SalesBond blog and the home page.
Official sources
- Interseller: top email address patterns by company size — the five most used formats at each company size, from more than 5 million companies.
- RFC 5322: Internet Message Format — how an email address is written: the local part, @ and the domain.
- RFC 2142: mailbox names for common services — standard role addresses such as sales@, info@ and support@.
Updated on Nov 5, 2026. This calculator is for information only and is not tax, legal or payroll advice. The addresses are likely formats, not checked mailboxes; confirm an address before you rely on it and follow the anti-spam rules where you send.
