Hey @billhoelzer56! This isn't a functionality we have built-in to ConvertKit at this time, unfortunately. Deadline Funnel is a service for setting up countdowns for launches and things like that, and they integrate with us. MotionMail app is also great for adding countdowns to emails, and they have a free option too.
I know that doesn't quite solve your referral issue, though. I'd recommend checking out our integrations page29 to see if any of the platforms that integrate with us may be a potential solution for you :) If not, you might have some luck setting something up with a service like Zapier26!
(All that being said, if anyone has experience setting something up like this within ConvertKit, please do chime in on this thread! 😊)