The goal of any email marketing campaign is to get results. Whether the desired result is to grow your subscriber database, generate more leads for your business or sell more produts, there is only one way to know if you are reaching your goals. If you are not tracking your results with quality analytics, you can never really know if your campaigns are effective.
No matter what the nature of your business, there are a number of metrics you need to know. Keeping a close eye on them will help you determine how you are doing, but they can also allow you to improve your performance and make every future campaign more effective.
Once you know what you have been doing right, it will be easier to make things even better. Just as important, knowing which parts of your campaign are not working makes it easier to tweak your message and avoid costly mistakes. Tracking factors like clickthrough rates, conversion rates, open rates, bounce rates, and overall ROI is the best way to gauge the effectiveness of your current campaigns and build upon that success for subsequent outings.