Google Analytics extension enable the GA campaign tracking adding to all links in your newsletter the GA tracking parameters.
You can pair your paid links campaign with your mail marketing campaign.
Per newsletter setting
The tracking parameters (campaign, source, medium, …) can be set per newsletter with fixed values or placeholder.
Integrated with Automated
Automatically generated newsletter by Automated can be enabled for GA tracking, using placeholders to differentiating each single newsletter.
Side by side with standard tracking
Newsletter standard tracking is not affected by GA it continue to function and collecting data. You can use both in parallel.