How do I protect my privacy on Gumroad?
The only information Gumroad exposes to your customers is the email address you use for your Support email and your Full Name. If you have not created a Support email, your login email will be exposed to customers in their receipts.
Both of these can be changed in the Settings menu.
If you are concerned about your privacy please check that the products you are selling do not reveal any information about you.
To reiterate - your customers will never see your banking information, payout information, or address. The only information they know about you is the Full Name you use on your account, your username, and support email.