How to add countdown timer in ConvertKit

Edit the contents of the box to include placeholder text, i.e., COUNTDOWN and switch to the HTML Editor by clicking this bottom:

Adding a countdown timer in convertkit

In the HTML code look for the words, 'COUNTDOWN', highlight those words, then copy and paste the countdown timer embed code into the HTML editor so it replaces the words, 'COUNTDOWN':

Adding a countdown timer in convertkit 2

Click 'HTML' to preview your countdown timer in your email editor:

Adding a countdown timer in convertkit 3