How to attach PDF invoice to email?

Challan PDF Invoice for WooCommerce sends PDF invoices as an attachment with email. Here is the process to configure.

Go to the Setting page of the plugin and enable the “Invoice Attach In Email” option. Then click on any option that you want to attach in a PDF invoice email such as:

1. New Order
2. Completed Order
3. Hold Order
4. Processing Order

And so on…