What is the “all” list (for e-mail) and the “txt_all” list (for text messages)?
The “all” list is a special list which sends the message to every single e-mail address that is subscribed to any e-mail list. Similarly, the “txt_all” list sends the text message to every single phone number and e-mail address that is subscribed to any text message list. Only the administrator can send to the “all” and “txt_all” lists.