E Invoice facility in QB

Hello there, @KRHK. 

Thanks for your time in posting your concern today. I want to help ensure I'm providing you with the correct information. 

Can you please specify the type of e-invoicing facility in QuickBooks you need?

At the moment, you can enable the online delivery option so you can send e-invoicing to your customers. 

Here's how: 

1. Click the Gear icon., then go to the Accounts and Settings menu under Your Company.
2. Click Sales on the left.
3. Click Online delivery.
4. Set Email options for invoices to an Online invoice from the drop-down.
5. Click Save and Done.

For more insights, you can find some of the answers to common questions about paying invoices online in QuickBooks. 

Get back to me here should you have additional or other concerns. I'm always around here to help you some more.