[{shop_url}] 

Hi {firstname} {lastname}, 

Referral Program 

We have created a voucher in your name for referring a friend.

Here is the code of your voucher: {voucher_num}, with an amount of
{voucher_amount}.

Simply copy/paste this code during the payment process for your next
order. 

{shop_name} [{shop_url}] powered by
PrestaShop(tm) [http://www.prestashop.com/]