Yes, once the account has been created and approved, an Agent can list multiple e-mail addresses that can receive different kinds of notifications. You can find this option by navigating to "My account".
Can a Trademark Agent use several email addresses in order to receive the notifications from the Clearinghouse?
FAQ
Account
API (Automated Interface)
How can I check which labels qualify as an identical match in accordance to the matching rules?
updated
How can I connect to the API?
updated
Financial
general
proof of use
Registrars
Registries
TMCH Interface
How can I reset my password?
updated