If I upload a csv with new information will it update the existing contact records?

Last updated: December 13, 2016

Available For:

Marketing: Basic, Pro, Enterprise
Sales: N/A

If you upload a csv with new information for existing contacts, this will overwrite any existing information. New contact records will not be created for the contacts who already exist in HubSpot.

  • HubSpot deduplicates contacts by email address, this is how we are able to associate the new information with an existing contact.
  • You can still view historical property values if a value for a property is overwritten.