15-point validation · 100% free

Validate any email address in seconds

Check deliverability, detect disposable addresses, verify mail servers, inspect SPF/DMARC records, and more. No signup required.

Need to validate multiple emails? Try our Bulk Validator

15
Validation Layers
250+
Disposable Domains
0
Cost - Forever
25
Bulk Per Batch

What we check

Every email runs through 15 validation checks to give you a comprehensive deliverability picture.

SMTP Validation

We connect directly to the recipient's mail server to verify the mailbox exists and can receive messages.

Disposable Detection

Cross-reference against 250+ known disposable email providers to catch throwaway addresses.

MX & DNS Lookup

Verify the domain exists, has valid MX records pointing to active mail servers.

SPF & DMARC

Check authentication records that protect the domain against spoofing and phishing attacks.

Role & Catch-All

Detect role-based addresses (info@, support@) and catch-all servers that accept everything.

Typo & Risk Analysis

Detect common domain typos, check DNS blacklists, verify domain age, and check Gravatar profiles.

Individual validation tools

Run any check independently with detailed results and explanations.

Bulk Validator

Verify up to 25 emails at once with full results

Syntax Checker

Validate email format against RFC standards

Domain Checker

Verify the email domain exists via DNS

MX Lookup

Find mail server records for any domain

SMTP Verify

Check if the mailbox accepts messages

Disposable Check

Detect temporary and throwaway emails

Role Detector

Identify generic role-based addresses

Catch-All Detector

Check if a server accepts all addresses

Free Provider Check

Identify Gmail, Yahoo, Outlook, etc.

Typo Detector

Catch common email domain misspellings

SPF Check

Verify Sender Policy Framework records

DMARC Check

Check domain authentication policies

Blacklist Check

Scan DNS blacklists for domain reputation

Gravatar Check

Detect if a profile image is linked

Domain Age

Check when the domain was registered

How it works

Three steps to verified email addresses.

1. Enter emails

Type an email here, or use our Bulk Validator for up to 25 at once.

2. 15-point validation

Syntax, DNS, MX, SMTP, disposable, SPF, DMARC, blacklists, and more.

3. Get results

Clear verdicts with scores, recommendations, and exportable CSV data.

What is Email Validation?

Email validation is the process of confirming that an email address is valid, active, and capable of receiving messages. It goes beyond checking whether the format looks right. A thorough email validator connects to the recipient's mail server, inspects DNS and MX records, checks for disposable providers, and evaluates domain reputation.

EmailProber runs 15 independent validation checks on every address you submit, covering syntax validation, domain existence, MX record lookup, SMTP mailbox verification, disposable detection, role-based address detection, catch-all server detection, SPF and DMARC authentication, DNS blacklist scanning, Gravatar and GitHub profile lookups, domain age checks, and more.

Why Validate Email Addresses?

Sending emails to invalid or risky addresses damages your sender reputation, increases bounce rates, and can get your domain blacklisted by ISPs. Whether you run marketing campaigns, transactional emails, or user registration flows, validating addresses before sending protects your deliverability and saves money.

  • Lower bounce rates: Remove invalid mailboxes before they generate hard bounces
  • Protect sender reputation: ISPs track bounce rates and penalize senders with poor list hygiene
  • Block disposable signups: Catch throwaway addresses that will never engage
  • Detect spam traps: Identify blacklisted domains that could flag your campaigns
  • Save on email costs: Stop paying to send messages that will never be delivered

Frequently Asked Questions

Is EmailProber really free?

Yes. EmailProber is 100% free with no signup required for the web tools. You can verify individual emails or use the bulk validator for up to 25 addresses per batch at no cost. The API requires a free account and attribution to activate.

How accurate is the email validator?

EmailProber connects directly to mail servers via SMTP to confirm whether a mailbox exists. Combined with DNS, MX, SPF, DMARC, blacklist, and behavioral checks, the 15-layer validation provides a comprehensive deliverability assessment. Results include a 0-100 score and a clear send/review/reject verdict.

What checks does the email validator run?

Every email is validated through 15 layers: syntax validation, domain DNS lookup, MX record lookup, SMTP mailbox verification, disposable provider detection, role-based address detection, catch-all server detection, free provider identification, typo detection, SPF record check, DMARC record check, DNS blacklist scan, Gravatar profile lookup, domain age check, and human-likelihood scoring.

Can I use the API to validate emails programmatically?

Yes. Sign up for a free account, cite EmailProber on your website, and you get API access with 10 requests per hour. The API returns JSON with all 15 validation checks, supports simple and full response modes, and works with any language via a standard REST endpoint.

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