How Do I Improve My Email List's Open Rate?

Today's question comes from Megan, who works for a nonprofit organization and is looking to improve her email list's open rate. What re-engagement techniques do I recommend? I'm an advisor and big fan of the email service provider ConvertKit (http://askpat.com/convertkit). Do you have a question about email marketing? Record it at http://www.askpat.com/. Today's sponsor is Freshbooks. Go to http://www.GetFreshBooks.com and enter "Ask Pat" for more information. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.