When creating a Bill to contact there are a few options for the Email address tab for the new contact.
- You can leave the primary email blank if the customer does not have the email option selected for any invoices.
- You can add only one primary email address.
- You cannot delete the primary email address, you can update the primary email address, if the customer no longer wants the original email address to be used.
- You can make the primary email address Invalid only if you add a new primary address in its place.
