Litmus： 2023年电子邮件服务提供商（ESPs）现状报告（英文版）

Welcome to the third installment in our four-part series on the state of email in 2023! Yes, livin’ on a prayer or not, we are more than halfway there! Thanks for sticking with us through the nitty gritty of email workflows, the beautiful flowing waterfalls of email design, and now, finally, joining us for our deep forest expedition into the world of Email Service Providers (ESPs). In this report, we’ll cover the tools we use to send emails to our beloved subscribers and customers. An ESP, mo