@pmfjoe I am not sure if this really makes sense.
Many shop owners ask, for example, how they can hide the password in the registration email with asterisks. Many people are concerned with data protection.
If someone else receives this confirmation e-mail or has gained unauthorized access, I think that he is in the customer account and can view various data.
Personally, I can not recommend that.
Guest orders - I do not want to compare or discuss with them.