Email validation · Free email verification
Free tier
Free email verification, no signup and no card.
What free covers
Free first. $49.99 when you outgrow it.
Free covers spot checks and a small lead list. You outgrow it the moment verification moves into a signup form that runs without you.
Create a free accountNo credit card required.
Verify an email address for free.
10 free checks a day, no signup and no card. Nothing is sent to the address you check.
Or try
One address, right now
Trueguard returns syntax, MX, SMTP, disposable and catch-all in one response. The median check finishes in under a second.
Nothing lands in the inbox
Trueguard stops the SMTP step before a message is queued, so the person you check is never contacted.
Free is a tier, not a trial
The free plan is a standing tier with no card on file, so nothing starts charging when you stop paying attention.
How much email verification do you get for free?
Ten checks a day in the browser, 100 validations a month on a free API key, 50,000 a month on the $49.99 Standard plan.
Trueguard gives you 10 email verifications a day in the browser and 100 validations a month on a free API key. The checker on this page runs the 10 daily checks with no account, no API key and no credit card, on a rolling 24 hour window. A free Trueguard account unlocks the 100 monthly validations on the email validation API, still without a card, and that allowance resets each billing period. Both free tiers run the same checks as the paid plan and return the same response, so free limits the volume, not the depth. Above the free tier, the Trueguard Standard plan costs $49.99 a month for 50,000 validations, and every validation past 50,000 is billed at $0.001.
In the browser: 10 checks a day
Free account: 100 a month
Paid: 50,000 for $49.99
Every API request counts against the quota, including addresses that come back invalid. Checks made on this page do not touch an API quota, because they do not need a key. For what the paid tier costs per check against the rest of the market, see the cheapest email verification API.
Free tier limits and prices last reviewed: 22 September 2026.
What one free validation returns.
The whole response from a free Trueguard key. Nothing in it is reserved for paying accounts.
A free key returns the whole response: the status, the syntax result, the SMTP and MX results with every mail server Trueguard resolved, the domain age, the catch-all flag, the disposable flag, and the role, free-mail and subaddress flags. Only three of them set a status of risky on their own: a catch-all domain, a disposable provider, and a high-risk top-level domain. The example here is a Gmail address. It is flagged as free-mail and still comes back safe, so you can route those yourself instead of losing them.
To read one signal on its own, each has a free single-purpose checker: syntax, mailbox existence, disposable and catch-all. For how the checks themselves work, see the free email verifier.
{
"email": "name@gmail.com",
"rawEmail": "name@gmail.com",
"syntax": { "isValid": true },
"deliverability": {
"status": "safe",
"isSmtpValid": true,
"isMxValid": true,
"isCatchall": false,
"isInboxFull": false,
"isDeliverable": true,
"isDisabled": false,
"mxRecords": [
"gmail-smtp-in.l.google.com",
"alt1.gmail-smtp-in.l.google.com",
"alt2.gmail-smtp-in.l.google.com",
"alt3.gmail-smtp-in.l.google.com",
"alt4.gmail-smtp-in.l.google.com"
]
},
"domain": {
"name": "gmail.com",
"age": 11363,
"isLive": true,
"isRisky": false
},
"quality": {
"isDisposable": false,
"isFree": true,
"isRole": false,
"isSubaddress": false
}
}Free email verification versus a paid plan.
Free covers 10 checks a day in the browser and 100 API validations a month. The Trueguard Standard plan covers 50,000 a month for $49.99. The checks are identical on both.
Is the free check less accurate?
No. Trueguard's free tier runs the same syntax, MX, SMTP, disposable and catch-all checks as the paid plan and returns the same four statuses. A paid plan buys volume, not a better answer.
Where does free email verification stop?
Free stops at automation. 10 checks a day in the browser and 100 a month on a free Trueguard key cover spot checks and a small lead list. A signup form that sees thousands of registrations a month runs past the free tier in the first week.
What can no email verification tell you?
No email verification can tell you whether anyone reads the mail. A check proves the mailbox accepts mail at that moment. Mailboxes fill up, get suspended and get deleted, so verify close to the moment you send.
Free API key, same endpoint.
A free Trueguard API key returns exactly what the paid tier returns, 100 times a month. Sign up, copy the key, send one POST.
One POST, one JSON response, and no SDK to install. The key is issued as soon as you create an account and goes in a single header.
curl -X POST https://api.trueguard.io/v2/email/validation \
-H "X-API-KEY: $YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{"email":"name@example.com"}'Questions about free email verification.
Still deciding? Contact support or read the documentation.
How many emails can I verify for free?
Trueguard verifies 10 email addresses a day on this page with no account. A free Trueguard account raises that to 100 validations a month through the API, still with no card. Above 100 a month, the Standard plan is $49.99 a month for 50,000 validations, then $0.001 per validation.
When does the free quota reset?
The 10 checks on this page run on a rolling 24 hour window, so a check taken now frees up 24 hours later. The 100 validations on a free Trueguard account reset each billing period.
What happens when I hit the free limit?
The Trueguard API returns a 429 and stops validating until the quota resets. Treat a 429 as inconclusive rather than as a bad address. Let the signup through with a flag and alert yourself, instead of blocking a real user on your own quota.
Is 100 validations a month enough for a signup form?
100 validations a month covers about three signups a day. That is enough for an internal tool, a waitlist, or a low-volume B2B form. A consumer signup form that sees thousands of registrations a month runs past the free tier in the first week.
Is free email verification as accurate as the paid plan?
Trueguard's free tier is metered differently, not built differently. Same checks, same four statuses, same response shape. If a mail server refuses to answer an SMTP probe on the free tier, it refuses on the paid plan too.
Can I verify a whole list of emails for free?
Trueguard has no bulk file upload, so a list means a short loop in your own script. Validation takes one address per request. A hundred addresses a month fit inside the free tier, and larger lists need the paid plan.
Do you store the addresses I check?
Yes. Trueguard logs each check on this page, including the address and its result, so the tool can be monitored and improved. Checks are handled under the privacy policy and data processing agreement linked in the footer. Nothing is ever sent to the address itself.
Does the free tier run on the production API?
Yes, on the same endpoint with the same response shape. That is deliberate. A free Trueguard key is a fair way to measure the service before you pay for it, and the code you write on it does not change when you upgrade.
Go further
Free to start, $49.99 when you scale.
A free Trueguard account includes 100 validations a month with no card. The Trueguard Standard plan is $49.99 a month for 50,000 validations, on the same endpoint with the same response.
Get your free API keyNo credit card required.
