How to send the Invoice with email.

Hi

Once our customer checkout from our shop, system auto send the Order (with created status) to customer.
It's nicely same with what I want.
After that I will receive the payment from my customer, at this time I would like that send the Tax Invoice to our customer in fact I can find out out to generate the invoice although I can't fine the say to send the invoice with email instead of sending order.
Please advice me.

-- url of the page with the problem -- :http://www.bbqhomespecialist.com/
-- HikaShop version -- : 222
-- Joomla version -- : 2.5
-- Browser(s) name and version -- : IE10, Chrome, Firefox

Hi,
I think that you'll be able to do that by using the plugin PDF .

May be although I think that Hiki shop will support natively.