Email Verifier
Use our Email Checker to verify any email address for deliverability.
Email Verifier – Check Any Address in Real Time
Not sure if an email address actually exists? Our email verifier connects directly to the mail server and tells you in under a second whether the address will deliver, bounce or is risky. No guessing, no test sends — just a clear, instant result.
The email verifier trusted by marketers and developers
Real-time checks, not cached guesses. Every email address is verified live the moment you submit it.
Email addresses verified
Verification accuracy
Average result time
Countries served
Every email verifier check that matters
Our email verifier doesn't just test the format. It runs seven layers of real-time checks so you know exactly why an address is valid, risky or undeliverable.
SMTP Validation
Connects to the receiving mail server and confirms the mailbox is active and accepting messages — the most reliable email verifier signal.
MX Record Check
Looks up the domain's mail exchange records to confirm email is configured for that domain before attempting an SMTP check.
Syntax Validation
Checks that the address follows RFC 5322 format so malformed email addresses are flagged immediately, before any network calls.
Catch-All Detection
Identifies domains that accept every incoming message regardless of whether the mailbox exists — these are marked Risky, not Deliverable.
Disposable Email Detection
Flags temporary, throwaway addresses from known burner-inbox providers so they never pollute your email list.
Role Address Flag
Identifies shared inboxes like info@, support@ or admin@ that often have low engagement and can hurt your sender reputation.
How to verify email address in 3 steps
Anyone can check an email address in seconds — no account needed for your first few free checks.
Enter the email address
Paste any email address into the input field at the top of the page.
Run the email verifier
Click Verify. The tool connects live to the mail server and runs all seven checks in parallel.
Read the instant result
See a clear verdict — Deliverable, Risky or Undeliverable — with a full breakdown of each check performed.
Why choose our free email verifier
Most email verification tools charge per check or limit free accounts to tiny quotas. Here's how we compare.
emailverifier.ai | Other tools | |
|---|---|---|
| Real-time SMTP check | Limited | |
| Free to start — no credit card | Paid plan required | |
| Works online, no installation | ||
| Catch-all domain detection | ||
| Disposable email detection | Paid | |
| Bulk email list verification | Paid |
Email verification built for every use case
Whether you're sending a newsletter to thousands or double-checking a lead's details before a follow-up call, email verification keeps your sender reputation clean and your bounce rate low.
Trusted by email senders worldwide
“We run every new subscriber through this email verifier before they hit our drip sequence. Bounce rates dropped from 4.2% to under 0.5% in one month.”
Sarah K.
Email Marketing Manager
“I added the email verifier API to our signup form in about 20 minutes. It catches throwaway addresses and SMTP-dead emails before they ever pollute our database.”
Marcus T.
Backend Developer
“Our SDRs used to waste time chasing emails that bounced immediately. Now we run lists through the bulk email verifier first and only contact the addresses that check out.”
Priya L.
Sales Operations Lead
Still have questions?
Our support team is happy to help with any email verification question.
Start verifying email addresses for free
Paste any address and get an instant deliverability result. No account, no credit card, no installation needed.