Lists
Named, hand-picked groups of contacts.
A list is a named group of contacts, e.g. Q4 prospects or Webinar sign-ups. Campaigns and sequences can send to a list. A person can be in any number of lists, and deleting a list never deletes its people.
The list object
{
"id": "66f1c2a9e4b0a1b2c3d4e101",
"name": "Q4 prospects",
"description": "Warm intros from the conference",
"contactCount": 2,
"createdAt": "2026-10-05T09:30:00.000Z",
"updatedAt": "2026-10-05T09:30:00.000Z"
}Prop
Type
To see who's in a list, list contacts with listId.