Why you should even know how to change esp? Have you ever choose one for your company? If you have and it doesn"t work like it should - now it"s the best time for changes. If you haven"t - maybe you should give it a try? We are going to explain everything. ESP is email service provider which means that this company offers email services with all needed tools. If you have your own website or an shop online - you have to stay in touch with all your viewers, followers or customers. If you want to build an audience - all emails or newsletters have to be perfect! Content is the most important factor because when your emails are boring - no one wants to read them and your work is for nothing! If you already chose esp and it"s poor - now it"s time to find out how to change esp!