Benjamin M.

Paris P. - I learned the hard way recently that while email is a unique key for the Contacts object, the Domain is not a unique key for the Company object. When syncing records through Segment or an API, Hubspot will reject duplicate emails if there is a match but it will allow duplicate companies to be created with the same domain value, and a separate unique key must be used through data pipelines and integrations. This was also confirmed by Hubspot.

Yes they changed it a little while back. Free accounts are good for basic testing and not much else. Need to buy at least the starter package if you need it for day-to-day business.