Then you just need to tell phplist to use your local CKEditor installation instead of loading it from the Content Delivery Network. You can find the relevant information here: plugin:ckeditor [phpList Resources]
“If you want to customise CKEditor, such as by adding further plugins to it, then you can install a local copy. You must then enter the URL for ckeditor.js in the CKEditor group on the Settings page. For example, if you installed CKEditor in the directory ckeditor_4.5.6 of your web site then the setting would be /ckeditor_4.5.6/ckeditor.js.”
@Marcel@tdgjrb This particular ckeditor plugin requires the css and javascript of the emojione package itself to be loaded. So building a custom version of ckeditor that includes the emojione plugin isn’t the whole solution.
I think that a simpler way to use emojis is to find some sort of desktop utility that lets you choose emojis and copy/paste into any application,not just ckeditor. If you are using windows then here is one way https://www.emojibase.com/emojis-on-windows