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About MailboxValidator

Validate your email list with MailboxValidator to get rid of bad emails and reduce email bounce rate.

If you do email marketing, you definitely want to take a look at MailboxValidator.  MailboxValidator is an easy to use email list cleaning service which can be used to check email lists to identify invalid or probably incorrect email addresses. 

MailboxValidator uses SMTP checks and syntax based checks to identify the invalid email addresses. We also offers an API service which can be used for validating a single email address dynamically. The API can return results in either XML or JSON format. It helps to reduce the bounce rate of emails and increase the success of your mailing reaching actual real customers.

Key Features:

  • Email Syntax Checker:
    Validates that the email address conforms to a standard format.

  • MX Record Checker:
    Checks for the existence of mail server records in the DNS.

  • MX Server Connection Checker:
    Tests for a successful network connection to the mail server.

  • Email Greylisting Checker:
    Checks if the mail server uses spam trap as honeypot.

  • Free Email Provider Checker:
    Checks to see if the email address is from a free email provider like Gmail.

  • Disposable Email Provider Checker:
    Checks to see if the email address is from a disposable email provider like Mailinator.

  • Suppressed Email Checker:
    Checks if an email is in our own Do Not Mail list.

  • Role Email Checker:
    Checks if an email address is a role email like admin, support, webmaster or sales.

  • Duplicate Email Remover:
    Removes duplicate emails in list to save cost.

  • Bulk Validation Supported:
    Upload a mailing list to speed up bulk cleaning.

  • Single Validation Supported:
    Validate a single email immediately.

  • Free Bulk Trial:
    Free bulk trial plan with 100 credits.

  • Free API:
    Free API credits for 300 credits per month.


  • A/B Testing
  • API
  • Audience Targeting
  • Brand Management
  • Calendar Management
  • Contact Management
  • Contact Sharing
  • Conversion Tracking
  • Customer Management
  • Dashboard
  • Data Export
  • Data Import
  • Data Visualization
  • Email Integration
  • External Integrations
  • Google Apps Integration
  • Lead Management
  • Lead Scoring
  • Marketing Automation
  • Multi-User
  • Notifications
  • Scheduling
  • Social-Media Integration
  • Third-Party Plugins/Add-Ons


  • Free One Month Trial for Bulk Plan

  • 300 Free Credits/Month for API Free Plan

  • Email Syntax Checker

  • MX Record Checker

  • MX Server Connection Checker

  • Email Greylisting Checker

  • Free Email Provider Checker

  • Disposable Email Provider Checker

  • Suppressed Email Checker

  • Role Email Checker


Bulk - Trial

Included in plan:
  • 100 Queries
  • 30-Day Validity
  • Free

API - Free

Included in plan:
  • 300 Free Monthly Queries


1 user(s) / month
Included in plan:
  • 1,000 Queries
  • $0.02 / Query


1 user(s) / month
Included in plan:
  • 5,000 Queries
  • $0.008 / Query


1 user(s) / month
Included in plan:
  • 10,000 Queries
  • $0.006 / Query


1 user(s) / month
Included in plan:
  • 50,000 Queries
  • $0.003 / Query


1 user(s) / month
Included in plan:
  • 100,000 Queries
  • $0.002 / Query


1 user(s) / month
Included in plan:
  • 500,000 Queries
  • $0.0008 / Query


1 user(s) / month
Included in plan:
  • 1,000,000 Queries
  • $0.0007 / Query


    Does this service offer multi-user capability (e.g. teams)?
  • No, it doesn't.

  • Does this service integrate with any other apps?
  • Mailchimp, and Zapier.

  • What is this service generally used for?
  • To validates email addresses and remove invalid emails. The clean email list helps to improve deliverability rate and reduce bounce rate.

  • What platforms does this service support?
  • This is a Web-app.

  • Who are the main user groups of this service?
  • Internet Marketing Agencies, Merchants, Developers, and Business Owners.

  • Does this service offer an API?
  • Yes, both Free and Paid.

  • What are some applications this service is commonly used in tandem with?
  • Often used with ESP.

  • Does this service offer guides, tutorials and or customer support?
  • Yes, we do.

Vendor Information

Based in:


Who uses MailboxValidator
  • Personal
  • Freelance
  • Startups
  • SMEs
  • Agencies
  • Enterprises
Desktop Platforms:
  • Web App
  • Windows
  • Macintosh
Regional Restrictions:
No restrictions.
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