Like all marketing campaigns, you should measure the performance of your email marketing campaigns. Without tracking, you can't determine how the campaign did and where improvements could be made in future email marketing campaigns.
Understanding email analytics is the first step to optimizing your email marketing campaigns.
What are email analytics?
Email analytics are metrics that show how your audience engages with the marketing emails you send them. Your metrics should tie into your short and long-term business goals
The metrics that you deem important to determine the success of your campaigns are known as key performance indicators (KPIs).