Customers open emails they connect with and those, which sound relevant. So, the first thing you need to do is to understand your customer’s expectations and things that matter to them the most. Whenever you shoot an email ask yourself, “Does the email content, especially the subject line matter to my customer?” Customers instantly connect to emails, which are personalized and when the call to action is relevant. Also, if you create an urgency they do read and respond as well. Focus on the value you create for the customer and the benefits you are offering.