Email Verifier
Email verification toolCheck deliverability before you send
Highlights
What you can do with it
- A marketing company cuts its bounce rate from 4.2% to below 0.5%
- A developer blocks disposable and invalid addresses in a signup form
- A sales operations team stops reps chasing dead email addresses
How to use it
- 1 Paste an email address into the box at the top of the page
- 2 Click verify to run the checks in real time
- 3 Read the result and the per-check report
- 4 Create an account or upgrade for higher limits and API access
Who it is for
Pros
- A few checks are free without even creating an account
- Results return in about a second
- Each check is reported separately, not just a verdict
- Bulk verification and API access on paid plans
Limitations
- The free plan has a daily quota that limits volume
- Catch-all domains can only be marked at risk, not confirmed
- Some mail servers block SMTP probes, which limits certainty
- Bulk and API use requires a paid plan
What Email Verifier is
emailverifier.ai is an online email verification tool. Its job is to answer one question before you send: will this address actually receive mail? Rather than guessing or sending a test message, it runs a stack of checks in real time. Syntax is validated against the RFC format, MX records are looked up to confirm the domain is configured for email, a direct SMTP connection confirms whether the mailbox is live, and additional checks flag catch-all domains, disposable addresses, and shared role addresses such as info or support. The result comes back as Deliverable, At Risk, or Non-Deliverable, with a report for each individual check, in about a second on average. A free plan includes a daily quota, and the first few verifications work without an account.
What you can do with it
- Verify a single address in real time with a per-check report
- Confirm the domain has valid MX records before sending
- Connect over SMTP to check whether the mailbox is live
- Flag catch-all domains as at risk rather than deliverable
- Detect disposable addresses and mark role addresses
- Verify a whole list in bulk, or integrate the API into a form
Who it is for
Email marketers use it to clean subscriber lists before a campaign, which is where bounce rates are decided. Sales teams verify prospect contact details so reps do not waste effort on dead addresses. Developers integrate the real-time check into registration forms to block disposable and invalid signups. Recruiters, SaaS platforms, and e-commerce stores use it to keep customer and candidate data accurate. Anyone sending email at volume benefits from checking first.
What to watch out for
The free plan has a daily quota, so real list cleaning is a paid activity, and API access sits behind the paid tier too. Certainty has limits: a catch-all domain accepts mail for any address, so those can only be marked at risk rather than confirmed deliverable, and some mail servers deliberately block SMTP probes, which reduces what any checker can see. Verification tells you whether an address is reachable, not whether the person behind it wants your email, so consent and list quality remain separate problems. Re-verify older lists periodically, since addresses go stale.
FAQ
Is there a free plan?
Yes. The free plan includes a daily quota, and the first few verifications work without an account.
How accurate is it?
The tool states accuracy up to 99% and an average verification time of under one second, though catch-all domains can only be flagged as at risk.
Can I verify a list in bulk?
Bulk list verification is supported, and API access comes with the paid plan.
What do the results mean?
Deliverable, At Risk, or Non-Deliverable, each with a detailed report covering syntax, MX records, SMTP, catch-all status, and address type.
Why it is free
What the official page says： free plan
Free limits, trial length and features are decided by the official site and can change at any time.
Product preview
Screenshot archived from the listing page, for preview only.
