Hi,
I think you can.
First, you'll need AcyMailing Entreprise. It's actually AcyMailing which will do all this.
You'll need first to create a newsletter with a coupon tag so that a dynamic coupon code can be generated when the email is sent by AcyMailing:
docs.acymailing.com/v/old/integration-pl...ugin-hikashop#coupon
Then, you can add that newsletter in a campaign.
Then, you can duplicate your payment methods in HikaShop with one set for the orders below 50 and one set for the orders above using the "minimum price" and "maximum price" settings of the payment methods.
That way, you can create a mass action in AcyMailing, with a trigger when an order is confirmed, a filter on the order payment method (
docs.acymailing.com/v/old/integration-pl...ugin-hikashop#orders
) and an action to add the user to the campaign so that the email will be sent to the customer.
More information about mass actions in AcyMailing can be found here:
docs.acymailing.com/v/old/main-pages/users/mass-actions
I would recommend to check with AcyMailing's support for more information on all this.