I would be happy to help you with this @airmods1191. While there's a 100-character limit for the cc field, you might want to consider entering the remaining email addresses in, we can enter multiple email addresses in the Customer Information. Here’s how:
Click Sales, then choose Customers.
Choose a customer.
Select the CustomerDetails tab, then click Edit.
You can enter the email addresses in the Email field.
I hope this is helpful! Let us know if you need anything else by leaving a comment below.