No, the Responsible Officer (RO) cannot list more than one email address on the registration system. The RO can only list one email address in question 10 of the registration. This email address is crucial as it is used for receiving FATCA notification emails regarding the account status and updates. Therefore, the RO should carefully consider which email address to provide. Other points of contact may inquire about the account, and their email addresses will be used for verification purposes.
Sources:
Instructions for Form 8957 (06/2018)
Publication 5118 (07/2021)
