I see that the submission e-mail address in a form is stored in the users file in editwrx. Is there a way to change the address? The file does not appear to be editable.
You can login as Admin and go to the User Setups tab and change the user's email address(s). Multiple addresses are separated by a pipe (|). If you change an email address in the users.txt file that is being used in a foirm submission you need to also change the form's target email address. Double click the border of a form to load the form's form tag into the FormS Wizard to make that change.
If you want to just change the address on the form, the Wizard will add the new email address to the user's user.txt record if it does not already exist, saving you the trouble of editing user.txt.