I have been using MassDelivery for work for over a year now. Although it is not the only email marketing service, it holds the top position on my list. The service is absolutely simple and intuitive. Setting up and sending newsletters is effortless. The functionality of MassDelivery truly deserves a rating of 5! With it, you can create mass mailings, beautiful responsive emails, conduct surveys, and much more. There are many ready-made templates that significantly simplify the process of creating newsletters. It's important to note that there is no moderation for mailings. After sending, you can review the statistics in convenient graphs. It's nice that the statistics can be integrated with Yandex.Metrics and Google Analytics. The service offers 5 pricing plans, one of which is free. Although the free plan has limitations on the number of subscribers and emails, it’s a great opportunity to test the service without any financial investment. I recommend MassDelivery to anyone who regularly engages in mass mailings.