Can we add more than one e-mail on the customers profile?

Hello, vfaure-trimac-co.

Yes, we can definitely add more than one e-mail on the customer's profile. I'd be more than happy to show you the steps. 

We can do this by adding a comma after every email address you want to add to their profile. Here are the steps: 

1. Go to Sales, then select the Customers tab. 
2. Open the customer's profile.
3. Click the Edit button.
4. Under the Email field, enter the email addresses with each separated by a comma. 
5. Once done, click Save. 

If you'd like to know more about managing your customers, I'll share this article with you: Add and manage customers in QuickBooks Online. 

Need help in raising invoices for your customers? Or perhaps do you need to create some statements for their due invoices and balances? I'll include these articles in case you need some help in the near future: 

• Create invoices in QuickBooks Online
• Record invoice payments in QuickBooks Online
• Create and send customer statements in QuickBooks Online

You can always ask around again if you have questions about your customer profiles. I can also cover other things like sales transactions, expenses, or running reports. Just add the details to your reply and I'll help you again soon.