If you are using Wootric's HTML email templates for your email surveys and want to customize them to pass custom properties so you can use Wootric's dashboard segmentation, here's how. (Why segment your feedback?)
If you need a Wootric email template, please contact us!
Some things to note:
The 11 score links will all start like this:
You will add your custom properties to end of those links.
Here are some articles on customizing templates published by the various email services that you might be using, for your reference.