The Gmail Username Checker That Tells You If Any Gmail Mailbox Is Real.

Yes. You get 4 Gmail checks per day from this page with no account, no card. Each one is a live SMTP conversation with Google’s servers, not a stripped-down preview, so four checks is enough to settle a “does this gmail.com mailbox still exist” question on the spot.

Need more than a handful? Create a free account and 1,000 checks unlock instantly, 2,500 if your signup email is a work address. Beyond that, credits are pay-as-you-go and never expire on any paid plan, with volume pricing shown for your region.

Either works. If you have the full address, paste [email protected] and run it. If you only have the username, add @gmail.com to the end and check that. Every Gmail username maps to exactly one gmail.com mailbox, so the username plus the domain is all the checker needs.

Worth knowing for Gmail specifically: Google ignores dots and anything after a + in the local part, so [email protected] and [email protected] reach the same inbox. The checker resolves to the real underlying mailbox either way.

It confirms whether a gmail.com address is a real mailbox that can receive mail. Nine checks run in parallel every time you check a Gmail address:

• Syntax + format validation (RFC 5321 / 5322)
• Domain existence and MX record presence
• SMTP handshake and mailbox-exists ping
• Disposable-domain match
• Role-address detection
• Catch-all domain detection
• Domain age scoring
• Email authentication (SPF / DKIM / DMARC)
• AI-confidence pass on ambiguous results

For Gmail, the MX + SMTP pair does the heavy lifting: it talks to Google’s receiving servers to confirm the specific mailbox is live before you ever send. If you want to check any email address one at a time, the checker runs the very same engine on every domain.

No, and that distinction matters. This is a Gmail email verifier: it tells you whether an address already exists and can receive mail. It does not tell you whether a username is free to claim as a new Google account, which only Google’s signup flow can answer.

In practice the two are opposites. If the checker says a Gmail address is deliverable, that mailbox is taken and live. If it comes back undeliverable, no one is receiving mail there. Use this to clean a list or confirm a contact, not to scout open usernames.

99.99 % accuracy on a 1,000-address benchmark list, and Gmail verdicts sit at the clean end of that range. gmail.com is not a catch-all domain and Google’s SMTP responses are unambiguous: a dead mailbox is refused with a hard 550-5.1.1 “address does not exist” rejection, a live one accepts the handshake. Compare that with B2B lists, where 20-40 % of addresses hide behind catch-all servers that accept everything and force a confidence call.

The free tier caps volume, never accuracy. A Gmail address checked here gets the identical pipeline the paid Email Verification API and every paid plan run.

Yes. Gmail is usually the single largest domain on a consumer list, and a free signup covers 1,000 checks (2,500 with a work email), enough to sweep the gmail.com column of most small lists in one CSV upload. The engine also recognises Gmail’s aliasing as it goes: dotted variants, +tags, and the older googlemail.com spelling all resolve to the same underlying mailbox, so duplicates surface instead of silently burning credits.

For larger lists, paid credit packs are pay-as-you-go and never expire, with pricing localized to your region. CSV upload, API access, and parallel processing are included from the free tier up, and the free email validator takes mixed lists where Gmail sits next to every other domain.

No. A Gmail check is a live conversation with Google’s receiving servers, not a query against a saved database. The address rides the SMTP handshake out, the verdict comes back, and the address is discarded from memory the moment the check completes. There is no record of which gmail.com accounts you looked up, and nothing to retain or sell.

We’re SOC 2 Type II compliant with the full Trust Center report on request. The privacy policy spells out byte by byte what we touch and what we don’t.

The widget pauses at 4 anonymous checks and resets 24 hours later. Mid-list with more Gmail contacts to confirm? Create a free account and 1,000 checks open up on the spot (2,500 if your signup email is a work address), still with no card on file.

Teams who verify gmail.com-heavy lists of 10,000+ on a schedule usually graduate to a paid credit pack, since credits never expire and carry across runs.

A single check returns in about 380 ms median, and Gmail tends to land on the fast side of that: Google’s MX endpoints answer promptly, and recently verified gmail.com results come from cache at sub-50 ms. Bulk runs at roughly 10,000 emails per minute on the standard tier, and Gmail-heavy lists hold that pace because gmail.com verdicts rarely need the extra passes ambiguous catch-all domains do.

SLA is 99.9 % uptime on Starter, 99.99 % with an annual Volume contract. Real-time uptime and incident history live at status.verifox.ai, and the request and response shapes are in the API docs.

Yes. The REST API reference documents the inbound and outbound shapes for every endpoint, so you can drop real-time Gmail verification into signup forms, CRMs, or any tool that speaks REST. HubSpot, Salesforce, Zapier, Klaviyo, Mailchimp, and Brevo all connect out of the box.

Verifox also ships native MCP server support so AI agents (Claude, Cursor, custom LLM apps) can verify Gmail addresses without glue code. Drop the MCP URL into your agent config and the tools are wired.