# Guides

URL: https://email-validation.org/guides/
Updated: 2026-10-20

> Documentation index: https://email-validation.org/llms.txt

Practical guides to email verification and list hygiene: how a check works, what catch-all domains are, how to
clean a list and how to keep bounces down. Each one ends with links into the product and the docs.

## [What is email verification?](https://email-validation.org/guides/what-is-email-verification/)

How email verification checks syntax, domains, MX records and mailboxes, how it differs from validation, and what it can and cannot tell you.

## [Catch-all emails explained](https://email-validation.org/guides/catch-all-emails/)

Why some domains accept mail for any address, why verifiers cannot confirm those mailboxes, and practical rules for sending to catch-all results.

## [How to clean an email list](https://email-validation.org/guides/email-list-cleaning/)

A step-by-step method to clean an email list: export, verify, segment by status, suppress and re-check. What to remove and what to keep.

## [Reduce your email bounce rate](https://email-validation.org/guides/reduce-email-bounce-rate/)

Hard and soft bounces, why they hurt sender reputation, and the checks that prevent them before you send. With a checklist for each campaign.

## [Verify an email address without sending a message](https://email-validation.org/guides/verify-email-without-sending/)

How mail servers can confirm a mailbox during the SMTP conversation, why some refuse to, and DIY checks compared with a verification service.

Looking for a single term? See the [glossary](https://email-validation.org/glossary/). Building an integration? Start with the
[documentation](https://email-validation.org/docs/).