Question: I need a system that can help me manage my subscribers and automate regular email campaigns, autoresponders, and A/B tests.

If you're looking for a more advanced email marketing tool, Mailercloud is a good option. It's got a drag-and-drop template builder, automated campaigns, autoresponders and A/B testing. The tool also offers detailed statistics and integrates with many web services for easy contact synchronization. With a starting price of $10 per month for unlimited emails, it's suitable for small and large-scale operations.

Another powerful option is ZooTools, geared for small and medium-sized businesses. This all-in-one growth platform offers tools to capture leads, engage with your audience and retain users through targeted email campaigns and push notifications. It comes with AI-optimized titles and A/B testing to optimize your email campaigns, making it a good option for businesses that want to streamline their growth operations.

If you want a more personal touch, take a look at PulseMail, an AI-powered email assistant that can help you communicate better through email. It can automate your responses, prioritize emails based on importance and provide daily analytics to help you work more efficiently. It's good for small businesses and professionals who want to get their email work done without sacrificing productivity.