Every business is unique and the optimal frequency of sending emails varies depending on what’s best for your store. Some of the best practices mention a. Sending one or two emails a week is ideal for the businesses especially if you are starting out. Don’t miss out on sales opportunities and don’t make your list disengaged. b. Another observation is sending an email every two weeks is also ideal to gain that sweet spot in your subscriber list. c. Daily emails are known to drastically lower the engagement levels without generating more sales. Test to see what works the best for you. Above all else, deliver value with great content and personalized offers to continue to engage with your campaigns.