I went to the Docusign website by logging in with the email address that I didn't want requests going to. Then, I was able to update the Docusign account with the correct address. I just did this, so I'm not sure if I will now be notified correctly or not. 

I noticed that the prior list of signatures inside the Docusign portal disappeared after updating with my new email address. However, inside Pro-Connect, the signed forms are still available.

Update #1: 30 min later, I see that with the new email login, the prior list of Docusign requests are all listed inside the Docusign account again!