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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

Wednesday, November 13, 2024

We’ve just released v3.1 of our PHP SDK, featuring support for importing and verifying mailing list files in multiple formats, exporting results in various formats, and more. Check it out!

Thursday, October 31, 2024

.NET developers: we've just released version 4.2.1 of our .NET SDK and NuGet package, featuring an improved API for .NET 8.0 and enhanced documentation. Learn more

Tuesday, October 22, 2024

Starting today, our email verification service can detect disposable / temporary Gmail and Outlook addresses; these special addresses may look legitimate but should be removed from your mailing lists because they lead to fake registrations and false engagement. Learn more

Monday, October 7, 2024

🚨 Big news: we've just upgraded our AI for detecting disposable / temporary emails! Our email checker can now identify over 1 million burner domains, with fresh updates every hour.

From our blog

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
12 Top Reasons Emails Bounce (and How to Fix Them)
September 12, 2024

Understanding the reasons behind email bounces is key to maintaining a successful email marketing strategy: by proactively verifying your email list, following best practices, and regularly monitoring your bounce rates, you can protect your sender reputation and ensure that your messages land where they’re meant to - your recipient’s inbox.

Read more
Farewell to SORBS: a pioneering DNSBL shuts down after two decades
June 27, 2024

After more than two decades of service, SORBS (Spam and Open Relay Blocking System), a pioneering force in the realm of DNS-based blacklists (DNSBL), has officially ceased operations as of June 5, 2024: learn more about the rich history of SORBS, its technical intricacies, and its eventual decommissioning.

Read more
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