Subscriber State Changes
Record a subscriber state by contact email
Record a subscriber state between multiple HubSpot contacts and a marketing event, using contact email addresses. Note that the contact must already exist in HubSpot; a contact will not be created. The contactProperties field is used only when creating a new contact. These properties will not update existing contacts.
post/marketing/marketing-events/2026-03/events/{externalEventId}/{subscriberState}/email-upsert
Path parameters
externalEventIdstring required
subscriberStatestring required
Query parameters
externalAccountIdstring required
Request body
Response
An error occurred.