For expert bloggers, writers, and entrepreneurs, ConvertKit is a powerful email marketing tool. It is both simple to use and tremendously powerful. ConvertKit&8217;s distinctive aspect is that it lets you give content and rewards to anyone who signs up for email newsletters. It also has simple auto-responders that let you generate drip emails using its emailing platform. What we liked: Brevo’s prices are hard to beat, with their lowest plan starting at $25/month for up to 20,000 emails. And the fact that you get so much for the little you pay is incredible. For instance, we love that you can send transactional emails (invoices, password resets, etc.) straight from the tool and track website visitors. Automations are also pretty advanced, with options to build email campaigns based on email clicks, opens, and web visits. It also offers a decent plugin for WordPress.