how to delete duplicates in outlook contact list

If the email address from the second submission doesn't already exist as a contact in HubSpot, the email address will overwrite the existing email address for the contact.The information from the second form submission will overwrite the information from the first submission because they have the same cookie stored in their browser.If two form submissions come from the same browser and computer, the submissions will be merged into one record because HubSpot will detect the same user token for both submissions.

If you've turned on GDPR functionality in your account, a user must accept your privacy policy banner in order for this cookie to be associated with their contact record. When a new contact is added to HubSpot through a form submission, HubSpot checks a contact's user token (i.e., hubspotutk cookie) to see if it matches an existing contact. Deduplicate contacts, companies, deals, tickets, or products by record ID.Deduplicate companies by company domain name.HubSpot deduplicates objects that are created in the CRM (e.g., imports, forms submissions) in the following ways: Users in a Professional or Enterprise accounts can also manually manage possible duplicates by using the duplicate management tool. You can include Record IDs in your import file to deduplicate records via an import. Record IDs can also be used to deduplicate contacts, companies, deals, tickets, products, and custom objects. HubSpot automatically deduplicates contacts using email addresses, and companies using domain names.

How to delete duplicates in outlook contact list