Post creating email templates using the WooCommerce Email Customizer plugin, if you wish to revert back to the default email template, then here are the steps to be done:Navigate to WooCommerce->WooCommerce Email Builder->Settings->Reset all template to default.Once you click on the revert icon, you will be prompted with a confirmation message. The option to be selected is "YES, I'M SURE".After clicking the option, a success message will appear that confirms the reversion.Screenshots: 

And that is it. You have now reverted back to the default email templates. 

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