The answer doesn't fit the situation. The reminder emails display my (mostly redacted) User ID. The reminder emails and filing confirmation emails went to the same email address.
I could test the answer by going through the forgot User ID process I suppose. https://ttlc.intuit.com/turbotax-support/en-us/help-article/accountant-access/forgot-user-id-passwor...
Organizations ask for feedback. They then can choose whether to use it or not.
