System fields are the default fields in LeadsHook, which cannot be modified by the users, such as email, first_name and etc.

Here is how to access System custom fields:

If you wish to add your own fields, you may create form or answer custom fields.

How to create and add a Custom Field

Note that the email system custom field should always be used to capture the email address. Using other email fields have been reported to break sometimes.


Understanding system and custom fields in LeadsHook is essential for capturing and utilizing data from your decision trees. Be sure to use the appropriate fields for capturing data to ensure the smooth functioning of your decision trees.


  • Can I delete system custom fields?
    • No, system custom fields are part of the default setup and cannot be deleted.