AcyMailing

AcyMailing is one of the oldest WordPress email plugins, serving newsletter publishers since 2009. It offers subscriber management with advanced segmentation rules, conditional autoresponders that respond based on subscriber behavior, and dynamic content blocks that change based on recipient data. The plugin integrates with WordPress user roles and custom fields to create personalized emails.

It's a good fit for publications and marketers who want powerful segmentation without leaving WordPress or paying per-subscriber fees. AcyMailing handles list hygiene, bounce management, and email delivery tracking. Compared to newer all-in-one platforms, it focuses on email and automation rather than SMS or landing pages, making it leaner for teams that just need email marketing done within WordPress.