---
title: Validation activation | Koalify Email Validation Knowledge Base
description: "Turn validation results into action: get notified, and stop sending to bad addresses."
---

[Skip to content](https://koalify.io/email-validation-knowledge-base/validation-activation#main-content)

![koalify\_rectangle\_-Jul-20-2026-08-43-06-7935-AM](https://koalify.io/hs-fs/hubfs/koalify_rectangle_-Jul-20-2026-08-43-06-7935-AM.png?width=50&height=50&name=koalify_rectangle_-Jul-20-2026-08-43-06-7935-AM.png)

Open main navigation

Close main navigation

- [GET STARTED FREE](https://api.email.koalify.io/hubspot/install?utm_source=koalify&utm_medium=knowledgebase&utm_campaign=navigation)

[GET STARTED FREE](https://api.email.koalify.io/hubspot/install?utm_source=koalify&utm_medium=knowledgebase&utm_campaign=navigation)

 Search the Email Validation Knowledge Base 🐨

- There are no suggestions because the search field is empty.

1. [Koalify Email Validation Knowledge Base](https://koalify.io/email-validation-knowledge-base)
2. [Validation activation](https://koalify.io/email-validation-knowledge-base/validation-activation)

# Validation activation

 Turn validation results into action: get notified, and stop sending to bad addresses.

- [How to Set Invalid Contacts as Non-Marketing in HubSpot](https://koalify.io/email-validation-knowledge-base/how-to-set-invalid-contacts-as-non-marketing-in-hubspot)
- [How to Create an Exclusion List for Invalid Emails in HubSpot](https://koalify.io/email-validation-knowledge-base/how-to-create-an-exclusion-list-for-invalid-emails-in-hubspot)
- [How to create invalid email notifications in HubSpot](https://koalify.io/email-validation-knowledge-base/how-to-create-invalid-email-notifications-in-hubspot)

- [Getting started](https://koalify.io/email-validation-knowledge-base/getting-started)
- [Validation card](https://koalify.io/email-validation-knowledge-base/validation-card)
- [Workflow validation](https://koalify.io/email-validation-knowledge-base/workflow-validation)
- [Validation insights](https://koalify.io/email-validation-knowledge-base/validation-insights)
- [Validation activation](https://koalify.io/email-validation-knowledge-base/validation-activation)
- [Account & billing](https://koalify.io/email-validation-knowledge-base/account-billing)

[![koalify\_rectangle\_long\_with\_name\_bold-1](https://koalify.io/hs-fs/hubfs/koalify_rectangle_long_with_name_bold-1.png?width=100&height=25&name=koalify_rectangle_long_with_name_bold-1.png "koalify_rectangle_long_with_name_bold-1")](https://koalify.io/)

HubSpot deduplication and email validation

<https://www.linkedin.com/company/koalify-io/> <https://www.youtube.com/@Koalify_io>

Copyright © 2026, Koalify