I have a few workflows where, due to business processes, Nintex Automation Cloud workflow tasks are not set to require user authentication. This is primarily because the ‘Assignees’ are set to use a shared mailbox address. Any of up to 20 people can access the tasks in the target mailbox and approve them. I know this is not the preferred way to work with these task forms, but it is something we have had to agree to, so that task respondents do not have to visit the NAC ‘My Nintex’ portal, but instead receive an email with a direct link to the task.

This all works OK, but it means that we cannot use any of the user context variable to get user name. email, etc.
In the absence of any context user info, is there any other way that I can get the email address or username of the user who opens for task form to approve?
Thanks in advance.