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Free Email Verifier

Check if an email address is real before you send. Detects invalid mailboxes, catch-all domains, and SEG-protected addresses.

95%+ Accuracy rate3 Verification layers100% Free, no limits

How it works

01

Enter an email address

Any address. Yours, a prospect's, or a list you're about to import.

02

We run 3-layer verification

Format check, MX record lookup, and mailbox-level deliverability probe.

03

Get a clear verdict

Deliverable, undeliverable, risky, or unknown, with the reason why.

Why this matters

Sending to invalid email addresses causes bounces. High bounce rates damage your sender reputation and can get you blacklisted. Validating emails before sending protects your deliverability and saves you from wasting outreach on dead addresses.

SendKit

Unlimited email validation on every plan

Powered by Enrich.so out of the box, or bring your own API key. SendKit supports 10+ major enrichment and validation providers. Validate your entire list on import.

Bulk validation

Validate entire CSV lists on import, thousands at a time

10+ providers

Enrich.so built-in, or bring your own API keys for any provider

Auto-clean on import

Invalid emails are flagged and skipped before your campaign starts

More free deliverability tools

Email & IP Blacklist Checker

Check if your email, IP, or domain is on any blacklist. Scans 50+ databases and shows your health score instantly.

SPF, DKIM & DMARC Checker

Verify your domain email authentication in one click. See which records pass, which fail, and how to fix them.

Inbox Placement Test

Test if your emails land in primary, promotions, or spam. Works across Gmail, Outlook, and Google Workspace.

Email Spam Checker

Paste your email copy and get a spam score. We scan for trigger words, formatting issues, and patterns that land you in spam.

Email Signature Generator

Create a professional HTML email signature in minutes. Works with Gmail, Outlook, and Apple Mail.

Email Warmup Calculator

Enter your target sending volume and get a day-by-day warmup schedule. Know exactly how many emails to send each day.

Subject Line Tester

Score your email subject line before you send. Get feedback on length, spam risk, and engagement potential.

Email Header Analyzer

Paste raw email headers and see the full routing chain, authentication results, and delivery delays in a readable format.

DNS Lookup Tool

Look up MX, A, CNAME, TXT, and NS records for any domain. See exactly how your domain is configured.

Domain Age Checker

Check how old any domain is. See registration date, expiry date, and registrar info. Domain age matters for email deliverability.

Email Bounce Rate Calculator

Calculate your email bounce rate and compare it against industry benchmarks. See if your list health needs attention.

Email Open Rate Calculator

Calculate your email open rate and benchmark it against industry averages. See how your campaigns compare.

Cold Email Mailbox Calculator

Enter your target replies and meetings. We calculate the exact number of mailboxes, domains, and daily sends you need.

frequently asked questions

Got questions? We've got answers.

Format and MX record checks are highly accurate. Mailbox-level verification can detect most invalid addresses but some servers do not reveal whether a specific mailbox exists (catch-all domains). Overall accuracy is typically 95%+.

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