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  • MailboxValidator Email Validation Service
    We clean up your email lists.
    With no hassles and no programming to be done.
  • MailboxValidator Email Validation Service
    Reduce Email Bounce Rate
    Just upload your email lists and we'll clean it right up.
    Less bounce and increase your conversion rate!
  • MailboxValidator Email Validation Service
    Minimize Email Sending Costs
    Only send emails to valid and active emails.
    Make every email count.

MailboxValidator is an easy to use bulk email list cleaning service.

All you have to do is upload your email list in either a text or CSV format and just wait for the email validation results.

Improve the quality of your email list by identifying invalid email addresses with MailboxValidator email validation solution. Learn how it works.

MailboxValidator API is easy to integrate and use.

Immediate results for email validation. Results returned in either JSON or XML formats.

Samples codes available to ease your integration with the API. More details.

MailboxValidator Email Validation

Secure and reliable email validation service to check for invalid email addresses.
It connects to the mail server and checks whether the mailbox exists or not.
It reduces bounce rate & costs. It increases conversion rate & sender reputation.
Learn why it's important to clean your email list.

Email Addresses Validated
Bad Email Addresses Detected

Our Key Features

Checks email syntax Email Syntax Checker

Validates that the email address conforms to a standard format.

Checks MX record MX Record Checker

Checks for the existence of mail server records in the DNS.

Tests network connection MX Server Connection Checker

Tests for a successful network connection to the mail server.

Checks for greylisting Email Greylisting Checker

Checks if the mail server uses spam trap as honeypot.

Detects Free Emails Free Email Provider Checker

Checks to see if the email address is from a free email provider like Gmail.

Detects Disposable Emails Disposable Email Provider Checker

Checks to see if the email address is from a disposable email provider like Mailinator.

Detects Suppressed Emails Suppressed Email Checker

Checks if an email is in our own Do Not Mail list.

Detects Role Emails Role Email Checker

Checks if an email address is a role email like admin, support, webmaster or sales.

Removes Duplicates Duplicate Email Remover

Removes duplicate emails in list to save cost.

Supports Bulk Validation Bulk Validation Supported

Upload a mailing list to speed up bulk cleaning.

Supports Single Validation Single Validation Supported

Validate a single email immediately.

Free Trial Plan Free Bulk Trial

Free bulk trial plan with 100 credits.


  • Improves email delivery success rate.
  • Reduces bad email reputation due to undelivered or bounced emails.
  • Fully automated.
  • Comprehensive report of domains, good-bad emails, etc.
  • Easy to use.

Free Bulk Trial

Get free 100 credits to try out the bulk feature of MailboxValidator for yourself.

Free API

Get free 300 credits to use the MailboxValidator API every month.


  • Zapier integration MailChimp integration
  • AWeber integration Mailgun integration
  • SendGrid integration Campaign Monitor integration
  • SparkPost integration HubSpot integration
  • MailerLite integration Constant Contact integration
  • VerticalResponse integration MooSend integration
  • Mailjet integration iContact integration
  • ActiveCampaign integration

For a successful email marketing campaign

Our Clients

Email Validation
Email Validation
Email Validation
Email Validation
Email Validation

What Our Clients Say About Us

Great service

Great service, easy to use great results and 5 star service

Matt Kole

"It does exactly what it says on the tin"!

"It does exactly what it says on the tin"! Very fast process and accurate. I definitely recommend this awesome tool for the routine tasks. Thanks!