add email address on customer email

Hi,
(Hika Starter version)

At the Order > Sales > customer record list > go into any order record >
click E-Mail icon > display an email table

Question:
Can I add an extra email address to receive the email? How?
(Because I've try to add an email address after the customer email address by ";xxx@xxx.com"
but cannot receive any email.

Thanks!
Jade