Unlayer email editor for Directus 10.
Copy below policies and paste it inside .env file.
CONTENT_SECURITY_POLICY_DIRECTIVES__SCRIPT_SRC_ELEM="'self' http://editor.unlayer.com"
CONTENT_SECURITY_POLICY_DIRECTIVES__FRAME_SRC="http://editor.unlayer.com"
You'll find the extension inside section Other
npm install directus-extension-unlayer
or
yarn add directus-extension-unlayer
Restart Directus