Where to enter a discount COUPON? Olivier Zetlers April 29, 2018 16:30 Follow On the payment page, look for the "Coupon field" as shown below. Related articles How to downgrade my plan? How do I access my Blasty invoices? How can I declare legal sources for my content? How many pen names can I use? Should I be concerned when receiving Blast rejections upon Auto-Blasts? Comments 0 comments Article is closed for comments.