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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

Thursday, October 9, 2025

Hey fellow Gophers! 🎉 We've just released v2.0 of our Go SDK! It now supports Verifalia API v2.7, lets you manage users and browser apps, use external callbacks for email verification jobs, filter jobs with predicates, and much more!

👉 Check it out

Monday, September 15, 2025

Starting today, our AI can automatically detect the right column to verify in multi-column spreadsheets you upload through the client area - even across multiple sheets in Excel workbooks! 🪄

Thursday, September 11, 2025

Great news! You can now pay with Amazon Pay in our client area. 🎉

For our South Korean clients, we've also added Naver Pay, PAYCO, Samsung Pay, plus all locally issued cards (Shinhan, Hyundai, Samsung, and more). And for our Swiss clients - Twint is now available!

Monday, September 1, 2025

Starting October 27th, 2025, we will remove job names from deleted email verification jobs, anonymize their originating IP addresses, and retain historical job references for a maximum of 24 months. Learn more

From our blog

Updates to how we store historical email verification job data
September 01, 2025

Starting October 27th, 2025, we will remove job names from deleted email verification jobs, anonymize their originating IP addresses, and retain historical job references for a maximum of 24 months.

Read more
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
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