Learn how our platform creates unified account profiles. 

Hull uses the following reserved attributes for identity resolution purposes:

The platform will first try to match an existing account by looking at the attributes in the order outlined above. If no account profile matches, a new profile will be created.

External IDs are permanent and robust identifiers that are consistent over the account's lifetime and therefore immutable. We recommend to use an External ID as often as possible.

An External ID is usually the identifier you reference an account by in your own database. We recommend using a database ID or UUID instead of an domain or name hash, because database IDs are immutable and do not change. Even if an account changes the domain or name, you will still recognize it as the same account in all of your tools and you are able to correlate them with your own internal database.

Important: This identifier cannot be changed once it is set.

There are certain use cases where you cannot identify an account by a unique identifier from your own database, but you have at least the domain of the account. For example you may have a list of the Global2000 Forbes companies with website urls only from which you can extract the domains.
In these cases, you can use the domain as identifier. 

The downside of this approach is that you can use only one domain, so if the account has multiple websites on different domains, you would end up with two different account profiles.