We have followed the directions for creating a custom ClientContext and have attempted to apply the the new context in the design mode of the email newsletter template we created. We included <cq:include path="clientcontext" resourceType="cq/personalization/components/clientcontext"/> in the template, but there is no way in the edit UI to open up the clientcontext design dialog and thus apply the right configuration. In essence, we can't do step 2 in this tutorial: https://helpx.adobe.com/experience-manager/kb/turn-off-geolocation.html. Can we simply set a property or can we get this UI element to work in newsletter?
I believe the way to do this in the JCR directly is to add a clientcontext node to the the jcr:content node of the template design (/etc/design/[path-to-template]. In that node we can specific the configuration path, etc. I copied what I saw in a Geometrixx test with a web page.
The question still remains though: can the clientcontext edit config be visible in the email editor?