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Email validations

Home Help

Contains articles about how Verifalia validates email addresses.

Articles

  • What is an email bounce?
  • What is SPF?
  • What is a hard bounce?
  • What is a disposable email address (DEA)?
  • What is SMTP tarpitting? What are SMTP tarpits (or tar pits)?
  • What is greylisting (or graylisting)?
  • What is an email validation pass?
  • What information does the validation report contain?
  • Reading your results: our status codes and what they mean
  • Does it send out any e-mail message, while validating?
  • Can email addresses have hyphens, minus signs and dashes?
  • How do result quality levels work?
  • How can I create a plain text file suitable for uploading into Verifalia?
  • How to export and validate an email list from Mailchimp?
  • Are email addresses case sensitive?
  • What are spam traps (also known as honeypots)?
  • What is a mail exchanger?
  • What is plus addressing?
  • What is a classification scheme?
  • What are classification overrides?

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Latest tweets - twitter.com/verifalia

Monday, May 26, 2025

🚀 API v2.7 is finally here! Major updates include complete user management system, custom X.509 client certificates for mTLS, contact method management, 50+ fine-grained permissions in upgraded auth system, and much more. Check out the docs.

Tuesday, March 25, 2025

We are excited to announce our updated client area! Now featuring multiple administrators, personalized contact settings, enhanced permissions, and improved navigation: learn more.

Monday, February 3, 2025

Verifying Yahoo email addresses is now 40% faster! We've just updated our email verification algorithms for quicker results.

Wednesday, January 15, 2025

🎉 We've just launched version 1.13 of our free email verification widget, which Google Tag Manager (GTM) now supports. Plus, this new version brings support for custom trusted origins and SamCart! 🚀✨

From our blog

Introducing Verifalia API v2.7: Powerful Team Management Features for Developers
May 27, 2025

Verifalia API v2.7 introduces 14 new endpoints for automated user management and over 50 granular permissions, making it ideal for enterprise integrations and reseller solutions that need advanced user control.

Read more
New Client Area Enhancements: Multiple Administrators, Fine-Grained Permissions, and More
March 25, 2025

The latest version of our client area includes several new features designed to enhance our email verification service and simplify its use: this blog post highlights the key updates.

Read more
New Feature: Detection of Disposable Gmail and Outlook Mailboxes
October 22, 2024

Disposable or temporary Gmail and Outlook addresses may appear legitimate, but they should be removed from your mailing lists because they lead to fake registrations and false engagement.

Read more
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