Users appreciate this WordPress plugin primarily for its ease of use and effective integration with Mandrill, rescuing users from manual setup difficulties. Despite previous concerns about outdated support, users are pleased that it is now actively maintained, providing reliable service. They commend the plugin for resolving errors caused by the old, unsupported Mandrill plugin and appreciate that it works seamlessly with WooCommerce and modern PHP versions. However, they note the need for updates to ensure full PHP 7.4 compatibility and suggest adding a few extra options to enhance functionality. Overall, users are happy with the plugin’s performance and its active development.