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Email Permutator

Enter a name and a company domain to get every common address format, from first.last@ to flast@, cleaned of accents and spaces and ready to verify. Copy the list or download it as a CSV. Nothing leaves your browser.

Accents are stripped and spaces and apostrophes removed. Everything runs in your browser: nothing is sent to a server.

What the email permutator does

An email permutator generates the likely addresses for a person at a company from their name and the company domain: first.last@, first@, flast@, firstlast@ and the rest. It does not tell you which one is real. To find out, verify the list: a live SMTP check confirms which mailbox exists, unless the domain is catch-all and accepts every address.

How it works

How the Email Permutator works

  1. Enter the name and domain

    First and last name, an optional middle name, and the company domain. Accents, spaces and apostrophes are cleaned up for you.

  2. Get every common format

    From first.last@ and first@ to flast@ and last.first@, deduplicated and numbered. Copy them or download a CSV.

  3. Verify to find the real one

    Run the list through bulk verification or the API. A live SMTP check shows which mailbox exists, without sending an email.

Reading your result

What verifying the list tells you

  • One address is deliverable

    The mail server confirmed exactly one format. That is the address to use.

  • Catch-all domain

    The server accepts every address, so SMTP alone cannot pick one. RocketVerifier returns each as risky with a catch-all verdict, scored partly on the address pattern the domain is known to use.

  • Every format is undeliverable

    None of the formats exist. Check the spelling of the name and the domain. The person may use a nickname, or may have left the company.

  • Unknown

    The server would not give a clear answer, for example because it greylisted or blocked the check. Unknown results are never charged.

What is a catch-all email? How SMTP verification works Catch-all domain

FAQ

Email permutator FAQ

What is the most common business email format?

first.last@company.com and first@company.com are two of the most common formats, which is why the permutator lists them first. flast@ (first initial plus last name) is also widespread. Companies pick one format and use it for everyone, so once you confirm one colleague's address you usually know the rest.

How do I find out which address is correct?

Download the CSV and upload it to RocketVerifier bulk verification, or send the addresses to the API. Each one gets a live SMTP mailbox check with 99.5% accuracy. Unknown results and duplicates are never charged.

Why does every permutation come back as accepted?

The domain is catch-all: its mail server accepts mail for any address, real or not, so an SMTP check cannot tell the formats apart. Run the domain through the catch-all checker first. RocketVerifier still scores each address on a catch-all domain as send_safe, send_with_caution or avoid.

Does verifying these addresses send the person an email?

No. RocketVerifier opens an SMTP conversation with the mail server, asks whether it accepts the address, and disconnects before any message is sent. The person sees nothing.

How are accents, hyphens and apostrophes handled?

Accents are stripped (José becomes jose), letters such as ß and ø are spelled out, and spaces and apostrophes are removed (O'Neil becomes oneil). Hyphens inside a name are kept. Everything runs in your browser and nothing is sent to a server.

Keep going

More free email tools

Turn a list of guesses into one verified address

Upload the CSV or call the API. RocketVerifier checks every mailbox over SMTP and gives catch-all domains a verdict instead of a shrug.

Start free Email verification API

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