Hi @Prosper,

So what you can do is insert a tag underneath the coupon in your template. In your case, since the coupon is meant to expire one year from when they receive the email you could use the following tag in your template beneath the coupon:

{% today '%Y-%m-%d' as today %} {{ today|days_later:365 }} 

So for example, {% today '%Y-%m-%d' as today %} would return the format 2021-02-12 

Note the date needs to be in the format '%Y-%m-%d' OR '%Y-%m-%dT%H:%M:%S' OR '%m-%d-%Y'