Make sure you have the new Universal Google Analytics tracking code implemented ...
Adwords – this hasn't changed in Magento 2; it's still just as easy as adding your Conversion ID and Label. E-commerce Tracking – One very ...
STEP 1: Login to Google Analytics and select the site you want to set-up a goal for. · STEP 2: Define a new goal by clicking on “+New Goal” button.
Take a look @ _trackPageview(opt_pageURL). Then in your newsletter template you could do something like this