It has been a while since I have worked on a Magento site. But I'm fairly certain this functionality might already be included somewhere, or there might be a free extension to achieve it.
The store has started to sell custom branded clothes for businesses where they can put the company logo on shirts etc.
What they need is for a second email to be sent to the customer if they order one of these products, simply just saying "Please reply to this email with your logo attached".
What would be the best way to achieve this? (Site is CE 22.214.171.124)