Internal name of the email property, used in API calls and system logic. Must start with a lowercase letter and contain only lowercase alphanumeric characters.

User-friendly label for the email property, displayed in the HubSpot UI.

UI field type for this property, such as text, checkbox, or dropdown, used to render the input field in HubSpot.

Underlying data type used to store the property value, such as string, number, or boolean.

Name of the property group to which this email property belongs, used for UI organization.

Explanation of the property's purpose or intended use within the context of email objects.

Position of the property relative to others in the same group, with lower numbers shown first.

Indicates whether the property's selectable options are managed externally rather than within the property configuration.

True if the property can be used as a field within HubSpot forms; false otherwise.

True if the value of this property is automatically calculated based on other data or system rules.

Specifies whether the property is hidden from standard views in the HubSpot interface.

True if this is a default property provided by HubSpot; false if it is a custom property.

Indicates whether the property can be archived and excluded from active use.

True if the property's definition (such as label or type) is locked and cannot be modified.

True if the property's value is not editable by users or workflows.

Serialized list of predefined options for properties that support multiple choices. Has a value if the FieldType is radio, checkbox, or boolean checkbox.

Boolean indicating whether the value of the property is unique.