Coupon code in email after purchase.

[Wolfy]

Hi, I'm attempting to include a coupon code in the email sent after the initial purchase. Despite my attempts using the option feature, I haven't been successful in getting it to work properly.

[aimeos]

Do you want to add a custom coupon code for each customer or a general coupon code for all customers?
If it's the later one, you may use an hidden attribute and display that in the e-mail template. Configurable and custom attributes won't work because they have to be actively selected by the customer.