If you want to integrate one or more emoji(s) in an experiment or a personalization, you have to use the encoded version of the emoji you would like to add to your campaign as Kameleoon editors do not support yet a direct integration of an emoji.
You will find on this website (“Codes” section) the code associated to each emoji for CSS, HTML or JavaScript.
Integrate them by using the HTML, CSS or JavaScript entry points on the Graphic editor, the Code editor, the Widget Studio or the personalization creation page.