---
title: Blog (5)
description: Explore tips on HubSpot Operations, CRM hygiene and especially HubSpot merging & deduplication (5)
---

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##### KOALIFY BLOG

## HubSpot Data Quality & Deduplication Blog

Practical guides, best practices, and tutorials on HubSpot deduplication, duplicate management, bulk merging, and CRM data quality. Learn how to find, manage, and remove duplicates in HubSpot across contacts, companies, deals, and more.

![How Fathom AI Merged 13,000 Duplicate Companies in HubSpot in 3 Hours](https://koalify.io/hs-fs/hubfs/How%20Fathom%20AI%20Merged%2013%2c000%20Duplicate%20Companies%20in%20HubSpot%20in%203%20Hours%20V2.png?width=370&height=220&name=How%20Fathom%20AI%20Merged%2013%2c000%20Duplicate%20Companies%20in%20HubSpot%20in%203%20Hours%20V2.png)

###### [How Fathom AI Merged 13,000 Duplicate Companies in HubSpot in 3 Hours](https://koalify.io/blog/fathom-ai-hubspot-duplicate-company-case-study)

By [Jonas](https://koalify.io/blog/author/jonas)  17 February, 2026

When CRM data gets messy, teams usually learn to live with it.

That’s what was happening at Fathom...

[Read More](https://koalify.io/blog/fathom-ai-hubspot-duplicate-company-case-study)

![How to Automate Parent–Child Company Associations in HubSpot](https://koalify.io/hs-fs/hubfs/Why%20HubSpot%20Automatic%20Association%20Is%20Limited%20V2.png?width=370&height=220&name=Why%20HubSpot%20Automatic%20Association%20Is%20Limited%20V2.png)

###### [How to Automate Parent–Child Company Associations in HubSpot](https://koalify.io/blog/automatic-association-hubspot-parent-child)

By [Jonas](https://koalify.io/blog/author/jonas)  13 February, 2026

How to Automate Parent–Child Company Associations in HubSpot

You have 50 franchise locations in...

[Read More](https://koalify.io/blog/automatic-association-hubspot-parent-child)

![How to Merge Duplicate Deals in HubSpot Without Duplicating Line Items](https://koalify.io/hs-fs/hubfs/How%20to%20Merge%20Duplicate%20Deals%20in%20HubSpot%20Without%20Duplicating%20Line%20Items.png?width=370&height=220&name=How%20to%20Merge%20Duplicate%20Deals%20in%20HubSpot%20Without%20Duplicating%20Line%20Items.png)

###### [How to Merge Duplicate Deals in HubSpot Without Duplicating Line Items](https://koalify.io/blog/merge-duplicate-deals-hubspot-without-duplicating-line-items)

By [Jonas](https://koalify.io/blog/author/jonas)  7 January, 2026

Cleaning up duplicate deals in HubSpot is an important step toward accurate reporting and reliable...

[Read More](https://koalify.io/blog/merge-duplicate-deals-hubspot-without-duplicating-line-items)

![How to Merge in HubSpot Using Filter Criteria That Apply Only to the Primary Record with Koalify](https://koalify.io/hs-fs/hubfs/Merging%20via%20Koalify%20is%20straightforward%20when%20the%20filter%20criteria%20are%20available%20on%20the%20non-primary%20records.png?width=370&height=220&name=Merging%20via%20Koalify%20is%20straightforward%20when%20the%20filter%20criteria%20are%20available%20on%20the%20non-primary%20records.png)

###### [How to Merge in HubSpot Using Filter Criteria That Apply Only to the Primary Record with Koalify](https://koalify.io/blog/merge-primary-only-filter-criteria-hubspot-koalify)

By [Jonas](https://koalify.io/blog/author/jonas)  5 January, 2026

When working with contact deduplication in **HubSpot**, one of the most common challenges RevOps teams...

[Read More](https://koalify.io/blog/merge-primary-only-filter-criteria-hubspot-koalify)

![How to Automatically Associate Contacts to Companies Using Fuzzy Matching in HubSpot](https://koalify.io/hs-fs/hubfs/How%20to%20Automatically%20Associate%20Contacts%20to%20Companies%20Using%20Fuzzy%20Matching%20in%20HubSpot.png?width=370&height=220&name=How%20to%20Automatically%20Associate%20Contacts%20to%20Companies%20Using%20Fuzzy%20Matching%20in%20HubSpot.png)

###### [How to Automatically Associate Contacts to Companies Using Fuzzy Matching in HubSpot](https://koalify.io/blog/associate-contacts-to-companies-fuzzy-matching-hubspot)

By [Jonas](https://koalify.io/blog/author/jonas)  29 December, 2025

Getting contacts associated with the right company in HubSpot sounds simple, but in practice, it...

[Read More](https://koalify.io/blog/associate-contacts-to-companies-fuzzy-matching-hubspot)

![How to include associated record data in HubSpot duplicate detection (with Koalify)](https://koalify.io/hs-fs/hubfs/How%20to%20include%20associated%20record%20data%20in%20HubSpot%20duplicate%20detection%20%28with%20Koalify%29%20resized.png?width=370&height=220&name=How%20to%20include%20associated%20record%20data%20in%20HubSpot%20duplicate%20detection%20%28with%20Koalify%29%20resized.png)

###### [How to include associated record data in HubSpot duplicate detection (with Koalify)](https://koalify.io/blog/how-to-include-associated-record-data-in-hubspot-duplicate-detection-with-koalify)

By [Jonas](https://koalify.io/blog/author/jonas)  29 December, 2025

When identifying duplicates in HubSpot, detection typically relies on properties that live directly...

[Read More](https://koalify.io/blog/how-to-include-associated-record-data-in-hubspot-duplicate-detection-with-koalify)

![How to avoid merging contacts that are still enrolled in HubSpot workflows](https://koalify.io/hs-fs/hubfs/How%20to%20avoid%20merging%20contacts%20that%20are%20still%20enrolled%20in%20HubSpot%20workflows%20resized.png?width=370&height=220&name=How%20to%20avoid%20merging%20contacts%20that%20are%20still%20enrolled%20in%20HubSpot%20workflows%20resized.png)

###### [How to avoid merging contacts that are still enrolled in HubSpot workflows](https://koalify.io/blog/hubspot-deduplication-avoid-merging-contacts-in-workflows)

By [Jonas](https://koalify.io/blog/author/jonas)  29 December, 2025

Keeping your CRM clean is key to running effective marketing, sales, and service teams. But when it...

[Read More](https://koalify.io/blog/hubspot-deduplication-avoid-merging-contacts-in-workflows)

![Dirty Data Secrets: Why Duplicate Data Breaks HubSpot (with Ryan Gunn)](https://koalify.io/hs-fs/hubfs/Dirty%20Data%20Secrets%20Why%20Duplicate%20Data%20Breaks%20HubSpot%20with%20Ryan%20Gunn%20V3.png?width=370&height=220&name=Dirty%20Data%20Secrets%20Why%20Duplicate%20Data%20Breaks%20HubSpot%20with%20Ryan%20Gunn%20V3.png)

###### [Dirty Data Secrets: Why Duplicate Data Breaks HubSpot (with Ryan Gunn)](https://koalify.io/blog/dirty-data-secrets-why-duplicate-data-breaks-hubspot-with-ryan-gunn)

By [Jonas](https://koalify.io/blog/author/jonas)  17 December, 2025

Duplicate data is one of the most underestimated problems in HubSpot—and it’s quietly breaking...

[Read More](https://koalify.io/blog/dirty-data-secrets-why-duplicate-data-breaks-hubspot-with-ryan-gunn)

![How Pyxis Growth Partners Cleaned 300,000 Duplicate HubSpot Contacts from 3 Phone Integrations](https://koalify.io/hs-fs/hubfs/How%20Pyxis%20Growth%20Partners%20Cleaned%20300%2c000%20Duplicate%20HubSpot%20Contacts%20from%203%20Phone%20Integrations.png?width=370&height=220&name=How%20Pyxis%20Growth%20Partners%20Cleaned%20300%2c000%20Duplicate%20HubSpot%20Contacts%20from%203%20Phone%20Integrations.png)

###### [How Pyxis Growth Partners Cleaned 300,000 Duplicate HubSpot Contacts from 3 Phone Integrations](https://koalify.io/blog/how-pyxis-growth-partners-cleaned-300000-duplicate-hubspot-contacts-from-3-phone-integrations)

By [Jonas](https://koalify.io/blog/author/jonas)  29 October, 2025

When three different phone systems, two call tracking tools, and over 20 brands all push leads into...

[Read More](https://koalify.io/blog/how-pyxis-growth-partners-cleaned-300000-duplicate-hubspot-contacts-from-3-phone-integrations)

![How The Insight Studio Fixed 2,000+ Duplicates in HubSpot’s Commercial Real Estate Data (with Koalify)](https://koalify.io/hs-fs/hubfs/How%20The%20Insight%20Studio%20Fixed%202%2c000%2B%20Duplicates%20in%20HubSpot%E2%80%99s%20Commercial%20Real%20Estate%20Data%20%28with%20Koalify%29.png?width=370&height=220&name=How%20The%20Insight%20Studio%20Fixed%202%2c000%2B%20Duplicates%20in%20HubSpot%E2%80%99s%20Commercial%20Real%20Estate%20Data%20%28with%20Koalify%29.png)

###### [How The Insight Studio Fixed 2,000+ Duplicates in HubSpot’s Commercial Real Estate Data (with Koalify)](https://koalify.io/blog/how-the-insight-studio-fixed-2000-duplicates-in-hubspots-commercial-real-estate-data-with-koalify)

By [Jonas](https://koalify.io/blog/author/jonas)  10 October, 2025

**When contact ownership equals commission, duplicates can cost real money.**

In this episode of *How I...*

[Read More](https://koalify.io/blog/how-the-insight-studio-fixed-2000-duplicates-in-hubspots-commercial-real-estate-data-with-koalify)

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###### Category

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- [HubSpot Integration Duplicates](https://koalify.io/blog/tag/hubspot-integration-duplicates)
- [HubSpot Associations](https://koalify.io/blog/tag/hubspot-associations)
- [HubSpot Deduplication](https://koalify.io/blog/tag/hubspot-deduplication)

###### 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 simplified

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## Koalify

HubSpot deduplication & email validation

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## Deduplication

[Deduplication for HubSpot](https://koalify.io)

[Pricing](https://koalify.io/pricing)

[Knowledge Base](https://koalify.io/knowledge-base)

[Terms of Service](https://koalify.io/terms-of-service)

[Data Processing Addendum](https://koalify.io/data-processing-addendum)

[HubSpot Deduplication Tools](https://koalify.io/best-hubspot-deduplication-apps)

[vs. HubSpot Native](https://koalify.io/compare/koalify-vs-hubspot-native-deduplication)

[vs. Insycle](https://koalify.io/compare/koalify-vs-insycle-hubspot-deduplication)

[vs. Dedupely](https://koalify.io/compare/koalify-vs-dedupely)

[HubSpot Deduplication Guide](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)

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

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

[Bulk Merge HubSpot](https://koalify.io/blog/how-to-bulk-merge-hubspot-duplicates-contacts-companies-more)

## Email Validation

[Email Validation for HubSpot](https://koalify.io/hubspot-email-validation)

[Pricing](https://koalify.io/hubspot-email-validation-pricing-koalify)

[Knowledge Base](https://koalify.io/email-validation-knowledge-base)

[Terms of Service](https://koalify.io/terms-of-service-email-validation)

[Data Processing Addendum](https://koalify.io/data-processing-addendum-email-validation)

[HubSpot Email Validation Tools](https://koalify.io/best-email-validation-tools-for-hubspot)

[vs. NeverBounce](https://koalify.io/compare/koalify-vs-neverbounce)

[vs. ZeroBounce](https://koalify.io/compare/koalify-vs-zerobounce)

[vs. Kickbox](https://koalify.io/compare/koalify-vs-kickbox)

[HubSpot Email Validation Guide](https://koalify.io/hubspot-email-validation-guide)

[HubSpot Email Deliverability](https://koalify.io/hubspot-email-deliverability)

[HubSpot Bounce Rate](https://koalify.io/hubspot-bounce-rate)

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