WikiAI Email Intelligence · Free

Free Email Verifier

Check. Verify. Understand.

Check an email address before you send: deliverability, mail setup, typos and disposable domains. For business addresses, see the company and public profiles behind it, with the evidence for every result.

  • No sign-up
  • Evidence for every result
  • Never guesses
  • Address never in a URL

Quick Check runs in your browser and sends only the domain to a DNS resolver. No sign-up. The address is never put in a URL or stored.

Deep Check adds company, domain-age and public-profile intelligence for business addresses. It is off for personal addresses.

Try:

No email tool can promise that a message reaches the inbox. This one tells you what the public, technical evidence says, and shows “Unknown” instead of guessing.

What Is Email Verification?

Email verification checks whether an address can receive mail before you send to it. It catches typos, dead domains and throwaway inboxes, which protects your sender reputation: bounces tell inbox providers you mail carelessly.

Validation checks the format (is it written correctly?). Verification goes further and checks the domain and its mail servers. Neither can promise inbox placement: that also depends on who sends the email and how.

How Email Verification Works

  1. 1. Syntax

    The address is checked against the email standards (RFC 5321 and 5322): one @, allowed characters and length limits.

  2. 2. Domain and DNS

    We look up the domain over DNS-over-HTTPS to confirm it exists and resolves.

  3. 3. Mail routing

    MX records show where mail for the domain goes. A null MX means the domain refuses all mail.

  4. 4. Risk checks

    Disposable domains, role addresses (info@, sales@), likely typos and provider username rules.

  5. 5. Domain security

    SPF, DKIM, DMARC and DNSSEC show how well the domain protects the mail it sends.

  6. 6. Deep Check

    For business domains: the official website, domain registration and public profiles, each with evidence.

What Each Result Means

Email verification statuses
StatusMeaning
Likely deliverableValid syntax, the domain exists, MX records are set up and nothing suggests a problem. The individual mailbox is still unconfirmed.
RiskyThe address may work, but something needs attention: a likely typo, a disposable domain or mail routing that relies on a fallback.
UndeliverableMail cannot arrive: the domain does not exist, it publishes a null MX, it has no mail servers or the name breaks the provider’s rules.
UnknownThe checks could not finish, usually because of a temporary DNS or network problem. Try again in a moment.

The confidence score (0–100) shows how strongly the checks support the status, with every point listed in the Technical tab. For a likely deliverable address it is capped at 90, because the individual mailbox is never confirmed.

What Are MX Records?

MX records are DNS entries that name the servers accepting email for a domain, each with a priority. If a domain has none, senders can only try its web address as a fallback, which rarely works. The MX host names also reveal the mail infrastructure, such as Google Workspace, Microsoft 365 or a security gateway like Proofpoint.

What Is a Catch-All Domain?

A catch-all domain accepts mail for any name, real or not. You can’t tell from outside whether a specific person’s mailbox exists, so results for these domains are always less certain. Detecting catch-all needs SMTP probing, which this tool doesn’t do.

What Is a Disposable Email?

A temporary inbox that expires after minutes or hours. People use them to avoid spam, but on a sign-up or lead list they mean the contact will never read your follow-up.

What Is a Role Email?

An address for a team or function, like info@, sales@ or support@. Role addresses are real and often monitored, so they are not “bad”. They just reach a shared inbox rather than one person, which matters for personal outreach.

Can You Find a LinkedIn Profile From Email?

Not reliably, and be wary of tools that claim otherwise. LinkedIn does not offer members a search by email address, and each member controls what their profile shows. Tools that promise it usually scrape LinkedIn against its terms or guess from the name.

This tool takes the honest route. It shows a LinkedIn link only when public evidence connects it: the company’s own website links to it, or the address owner published it themselves. Each result says why it was suggested and how strong the evidence is.

Public Profile Labels

  • Confirmed public association

    The owner published this address on the profile themselves, for example as their public GitHub email or their Gravatar.

  • Strong public association

    The exact address appears next to the profile on a public page, such as the company’s own team page.

  • Possible match

    Supporting evidence exists, for example a team page lists a matching name that links to the profile, but the address itself is not shown. A candidate, not proof.

  • No public match found

    Nothing in the sources checked links the address to a profile. It does not mean no profile exists.

  • Unknown / Unavailable

    A source could not be checked, for example because a public API limit was reached.

A name alone is never treated as a match. For personal addresses (Gmail, Outlook, iCloud, Proton and others), profile discovery is switched off.

Why Verification Is Not a Guarantee

A domain can be perfectly set up while a single mailbox is full, disabled or mistyped. Inbox placement then depends on the sender: SPF, DKIM and DMARC on your own domain, your sending reputation, and content people want. Treat “likely deliverable” as a strong green light, not a promise.

How to Check a Business Email

  1. Run a Quick Check to confirm the domain and MX records.
  2. Look at the mail infrastructure: a real company usually uses a mailbox provider or security gateway.
  3. Run a Deep Check to confirm the company website, its age and its public profiles.
  4. If you need the person, check whether the address is published on the company’s own site.
  5. When it matters, confirm by replying or calling a number from the official website.

Privacy: What Happens to the Address

  • Quick Check runs in your browser. Only the domain (the part after the @) is sent, over HTTPS, to Cloudflare’s DNS resolver, with Google Public DNS as a fallback.
  • Deep Check (business addresses only) sends the address to our server function, which reads up to four public pages of the domain’s own website plus its robots.txt and logo, and looks up the domain’s registration record (RDAP). The address is used only during that request to look for it on those pages. It is not logged, saved or cached.
  • Your browser also asks GitHub’s public API for profiles with this exact public email, and Gravatar’s public API using only a SHA-256 hash of the address. Those services see your IP address, as with any website you visit.
  • Company-level results are kept in server memory for up to 30 minutes and registration data for up to 6 hours, to limit repeat requests. Nothing is written to a database.
  • Addresses are never put in this site’s URLs, so results cannot become public pages. (The GitHub lookup above does include the address in its request to GitHub’s search API.) Reports you download stay on your device.
  • Google Analytics records anonymous usage events on this page, such as that a check was started or which result type it returned. It never receives the address, the domain or anything found about it.
  • Our host keeps standard request logs (time, page, IP address), which never include what you typed.

Because nothing tied to an address is kept, there is nothing to delete. Questions? See our privacy notice or contact us.

How to Protect Your Email Privacy

  • Keep your email private on GitHub (Settings → Emails) if you don’t want it linked to your profile.
  • Use a separate address, or a “+tag” alias, for sign-ups and newsletters.
  • Remove your address from public pages you control, or show a contact form instead.
  • If you own a domain, publish SPF, DKIM and DMARC so nobody can easily send mail pretending to be you.

Email Verifier: FAQ

Can I find a LinkedIn profile from an email?
Not directly, and no honest tool can promise it. LinkedIn does not let members search for people by email address, and what a profile shows depends on the member’s privacy settings. This tool never logs in to, searches or scrapes LinkedIn. It only shows a LinkedIn link when the company’s own website, or the address owner’s own public profile, links to it, and it labels how strong that evidence is.
Can you verify any email address?
We can check any address’s syntax, domain, mail servers, disposable status, role type and likely typos. What no free, honest web tool can do is confirm that a single mailbox exists, because that needs a live SMTP conversation with the mail server, which cloud hosting blocks and big providers deliberately answer vaguely. We show that as “Not tested” instead of guessing.
Can you verify Gmail addresses?
Yes, as far as the public rules allow. We confirm Gmail’s mail servers and check the name against Gmail’s published username rules (6–30 letters, numbers and periods). A name that breaks those rules cannot exist. A name that fits them may or may not be a real account: Google does not reveal that.
Can you verify business emails?
Yes. For custom domains we check the mail setup, detect the mail provider (for example Google Workspace or Microsoft 365), and with Deep Check read the company’s official website for its name, description, public social profiles and key pages, and look up the domain’s registration date.
What does an MX record mean?
An MX (mail exchanger) record is a DNS entry that tells other servers where to deliver email for a domain. A domain with no MX records usually cannot receive email. A “null MX” is a special record that says the domain accepts no email at all.
What is a disposable email?
A temporary inbox from services like Mailinator or 10 Minute Mail, often used to get past sign-up forms. Mail may arrive, but the inbox disappears soon after. We check domains against a public list of about 9,000 such services.
What is a catch-all domain?
A domain set to accept mail for any name, even ones that don’t exist. It makes individual mailboxes impossible to confirm from outside, so a catch-all result is always uncertain. Detecting it needs SMTP probing, which we don’t do, so we show “Unknown”.
Can a valid email still bounce?
Yes. The mailbox can be full, disabled or deleted, or never have existed on a domain that is otherwise set up correctly. And a delivered email can still land in spam: that depends on the sender’s reputation, authentication (SPF, DKIM, DMARC) and content.
Do you store my email?
No. Quick Check runs in your browser and only the domain is sent to a DNS resolver. Deep Check sends the address to our server only for the duration of the request, and it is not logged or saved. Addresses are never put in this site’s URLs. Details are in the privacy section above and our privacy notice.
Can I find social media from an email?
For business addresses, we show the company’s social profiles that its own website links to, plus any profiles the address owner published themselves (on Gravatar or as a public GitHub email). For personal addresses such as Gmail or Outlook, profile discovery is switched off to protect people’s privacy.
Why does the result say Unknown?
Because we don’t guess. “Unknown” means the evidence needed was not available: a DNS lookup timed out, a public source did not answer, or the fact (like a catch-all setting) cannot be observed without SMTP probing.

Read the full guide:How to Verify an Email Address

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