Customize the "From:" of the email that is sent
It wasn't until tonight, when I called Google support, that I realized that the reason why my email filter wasn't working correctly is because my other email address is tied to my main one.
Here's the issue. When the forms are completed I set it to email me a copy of the completed form. However, the intent is that I know that the form has been sent. Because the "To:" address is the primary user and the other email address is also tied to the email address even with a filter all the messages get filed away. So, I have to manually check when a form is completed OR use another email account as an intermediary.
Other apps that I use send from their own email addresses and so it would be nice if that was an option... although, I can understand why it could not be.