---
title: Blog | HubSpot Email Validation
description: HubSpot Email Validation | Explore tips on HubSpot Operations, CRM hygiene and especially HubSpot merging & deduplication
---

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##### Topic

# HubSpot Email Validation

![Unengaged contacts in HubSpot: why sending to them hurts everyone](https://koalify.io/hs-fs/hubfs/Unengaged%20contacts%20in%20HubSpot%20why%20sending%20to%20them%20hurts%20everyone.png?width=370&height=220&name=Unengaged%20contacts%20in%20HubSpot%20why%20sending%20to%20them%20hurts%20everyone.png)

###### [Unengaged contacts in HubSpot: why sending to them hurts everyone](https://koalify.io/blog/unengaged-contacts-in-hubspot-why-sending-to-them-hurts)

By [Jonas](https://koalify.io/blog/author/jonas)  25 September, 2026

Someone on your team wants the whole database in the monthly newsletter. It's 80,000 contacts....

[Read More](https://koalify.io/blog/unengaged-contacts-in-hubspot-why-sending-to-them-hurts)

![HubSpot sender reputation: what it is, how to check it, and how to rebuild it](https://koalify.io/hs-fs/hubfs/How%20to%20check%20your%20sender%20reputation%20in%20HubSpot.png?width=370&height=220&name=How%20to%20check%20your%20sender%20reputation%20in%20HubSpot.png)

###### [HubSpot sender reputation: what it is, how to check it, and how to rebuild it](https://koalify.io/blog/hubspot-sender-reputation-how-to-check-it-and-rebuild-it)

By [Jonas](https://koalify.io/blog/author/jonas)  21 September, 2026

Your newsletter used to get a 30% open rate. The last three sends came in at 14%, 11% and 12%....

[Read More](https://koalify.io/blog/hubspot-sender-reputation-how-to-check-it-and-rebuild-it)

![How to validate imported emails in HubSpot before they hit a list](https://koalify.io/hs-fs/hubfs/How%20to%20validate%20imported%20emails%20in%20HubSpot%20before%20they%20hit%20a%20list%20with%20error.png?width=370&height=220&name=How%20to%20validate%20imported%20emails%20in%20HubSpot%20before%20they%20hit%20a%20list%20with%20error.png)

###### [How to validate imported emails in HubSpot before they hit a list](https://koalify.io/blog/how-to-validate-imported-emails-in-hubspot-before-they-hit-a-list)

By [Jonas](https://koalify.io/blog/author/jonas)  9 September, 2026

You've just imported a list into HubSpot. Maybe it came across from your old CRM during a...

[Read More](https://koalify.io/blog/how-to-validate-imported-emails-in-hubspot-before-they-hit-a-list)

![Catch-all, role-based, disposable: what your HubSpot email validation results actually mean](https://koalify.io/hs-fs/hubfs/Catch-all%2c%20role-based%2c%20disposable%20what%20your%20HubSpot%20email%20validation%20results%20actually%20mean.png?width=370&height=220&name=Catch-all%2c%20role-based%2c%20disposable%20what%20your%20HubSpot%20email%20validation%20results%20actually%20mean.png)

###### [Catch-all, role-based, disposable: what your HubSpot email validation results actually mean](https://koalify.io/blog/catch-all-role-based-disposable-emails-hubspot)

By [Jonas](https://koalify.io/blog/author/jonas)  3 September, 2026

You finally ran a validation pass over your HubSpot list, and now you're looking at a column of...

[Read More](https://koalify.io/blog/catch-all-role-based-disposable-emails-hubspot)

![HubSpot soft bounce: what it is and how to fix it](https://koalify.io/hubfs/HubSpot%20soft%20bounce%20what%20it%20is%20and%20how%20to%20fix%20it.svg)

###### [HubSpot soft bounce: what it is and how to fix it](https://koalify.io/blog/hubspot-soft-bounce)

By [Jonas](https://koalify.io/blog/author/jonas)  25 August, 2026

A soft bounce is the one people ignore. Unlike a hard bounce, the address is real, HubSpot keeps...

[Read More](https://koalify.io/blog/hubspot-soft-bounce)

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- [HubSpot Data Quality](https://koalify.io/blog/tag/hubspot-data-quality)
- [HubSpot Integration Duplicates](https://koalify.io/blog/tag/hubspot-integration-duplicates)
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###### Popular Post

- [HubSpot best practices for contacts that leave a company](https://koalify.io/blog/hubspot-best-practices-for-contacts-that-leave-a-company)
- [How to Bulk Merge HubSpot Duplicates: Contacts, Companies, Deals and More](https://koalify.io/blog/how-to-bulk-merge-hubspot-duplicates-contacts-companies-more)
- [How to Merge Companies in HubSpot (Safely, Manually or in Bulk)](https://koalify.io/blog/how-to-merge-companies-in-hubspot-manual-or-in-bulk)
- [HubSpot Deduplication: How to Find, Manage, and Remove Duplicates in HubSpot](https://koalify.io/blog/hubspot-deduplication-the-ultimate-guide-to-zero-duplicates-in-hubspot)
- [How to Merge Duplicate Contacts in HubSpot Without Losing Data](https://koalify.io/blog/how-to-merge-contacts-in-hubspot-manual-or-in-bulk)

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[HubSpot Deduplication](https://koalify.io/blog/hubspot-deduplication-the-ultimate-guide-to-zero-duplicates-in-hubspot)

[Merge HubSpot Contacts](https://koalify.io/blog/how-to-merge-contacts-in-hubspot-manual-or-in-bulk)

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