Place a countdown widget on your landing page to show how much longer the code is valid for.
Ask every visitor an for an email address to send a discount code to. If you wish to provide a unique code for each user, make use of our autoresponder and add external auto-generated code to the email content.
If you prefer to share the coupon on the landing page rather than send individual emails, make sure the discount is easy to find. Don’t overdo it with the amount of texts, images and calls to action.