Use A/B Testing to Measure the Effectiveness of Your Email Campaigns

You cannot win in one go in the online world or elsewhere. A/B testing is important to perform to check the metric and see what works for your brand. When you understand the interests of your target audience, it helps you understand their need, resulting in modifying your product or service. Knowing what you customers like is the best marketing you can do. 

Also, segmenting is super important. Your email lists can be a mix of cold audience, hot audience, warm audience etc. Some of your audience might want to only enjoy the free content and some might want to buy from you. The segmenting will help you filter and create a funnel for you and your audience.