Initially, I had passed this deal as it seemed that it is sending mails from our wordpress server and still limiting the number of subscribers. But, later I realized that the limitations are valid only if we are using Mailpoet's server to send emails. If the host's server is used, everything is unlimited. If used with WooCommerce, it becomes a very powerful tool to send emails to people who have abandoned their cart. Best email plugin that I have used so far!