I'm using Web Form Builder to design and export the forms.
From within Web Form Builder, the Settings section is where I select Notification to set up the email the will be sent to the user whenever someone fills out the form. At the bottom of that section is where I can customize the code to change the appearance of the email. (see attached image)
Once I've modified the code, I then upload the files and folder to my website via FTP.
Then I access the website with the page that has the form, fill it out, and then wait until the email arrives to see if the results are formatted correctly.
My point was, I was trying to avoid having to go into the form in WFB, modify the code, save, export, upload, and test. I would like to know what file contains the Notification code so I could go in to that file via FTP, change the one or two bits of information, and save without having to do the whole nine yards.