# Global merge / Dedupe

**URL:** <https://community.hubspot.com/t/global-merge-dedupe/52691>\
**Category:** CRM\
**Created:** [March 7, 2022, 10:15pm UTC](https://community.hubspot.com/t/global-merge-dedupe/52691 "2022-03-07T22:15:05Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![PAllmond](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/pallmond/32/92434_2.png) [@PAllmond](https://community.hubspot.com/u/PAllmond)\
**Post date:** [March 7, 2022, 10:15pm UTC](https://community.hubspot.com/t/global-merge-dedupe/52691/1 "2022-03-07T22:15:05Z")

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Is there a function that will scan all instance of a contact (or companies) and do a global merge based on the email address field?

Example: I have 100s of companies in HS already. I want to import a list of companies and some of them might be duplicates. After the import I’d like run a function automatically merges all of the information for companies that have the same email address do I don’t have to go throught and do it manually for 100s of contact records.

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**Author:** ![Mike\_Eastwood](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/mike_eastwood/32/70075_2.png) [@Mike\_Eastwood](https://community.hubspot.com/u/Mike_Eastwood)\
**Post date:** [March 8, 2022, 12:50am UTC](https://community.hubspot.com/t/global-merge-dedupe/52691/2 "2022-03-08T00:50:45Z")

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Hi @PAllmond

When you import your Contacts, or Companies they can deduplicate automatically:

- [Contacts automatically deduplicate on Email Address](https://knowledge.hubspot.com/crm-setup/deduplication-of-contacts-companies-deals-tickets#deduplicate-contacts-by-email-address)
- [Companies deduplicate on Domain Name](https://knowledge.hubspot.com/crm-setup/deduplication-of-contacts-companies-deals-tickets#deduplicate-companies-by-company-domain)

Warning:

- if your _Contact_ has **no** _email address_ it will **not** automatically deduplicate
- if your _Company_ has **no** _domain name_ it will **not** automatically deduplicate

If you have HubSpot Pro, or Enterprise, you can manually deduplicate Contacts and Companies in the CRM.

Have fun

Mike

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**Author:** ![karstenkoehler](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/karstenkoehler/32/68554_2.png) [@karstenkoehler](https://community.hubspot.com/u/karstenkoehler)\
**Post date:** [March 8, 2022, 5:34am UTC](https://community.hubspot.com/t/global-merge-dedupe/52691/3 "2022-03-08T05:34:12Z")

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Hi @PAllmond,

HubSpot automatically deduplicates contacts by email address. No two contacts can exist with the same email address, it’s the unique identifier in HubSpot. The same goes for companies with company domains. These automations are explained here: [Deduplicate records in HubSpot](https://knowledge.hubspot.com/crm-setup/deduplication-of-contacts-companies-deals-tickets) (Records without email address or company domain name will be created as separate records in HubSpot, causing duplicates.)

If you want to deduplicate by other fields, you could either use the [deduplication tool in HubSpot](https://knowledge.hubspot.com/crm-setup/deduplication-of-contacts-companies-deals-tickets#manually-deduplicate-contacts-and-companies-professional-and-enterprise-only) (which suggests duplicates for manual deduplication) or a third-party solution like [Insycle](https://www.insycle.com/hubspot/).

Best regards!

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**Author:** ![PAllmond](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/pallmond/32/92434_2.png) [@PAllmond](https://community.hubspot.com/u/PAllmond)\
**Post date:** [March 8, 2022, 12:37pm UTC](https://community.hubspot.com/t/global-merge-dedupe/52691/4 "2022-03-08T12:37:39Z")

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Thank you. That was useful 🙂