ActiveCampaign is a full marketing suite that offers personalized email marketing, automation and sales engagement tools. It's got more than 900 native integrations with tools like Shopify, WordPress and Salesforce, and a sophisticated automation engine. That makes it a good choice for businesses large or small trying to get a better handle on customer interactions and lead conversion.
Another contender is Mailmodo, which offers a powerful automation engine and a drag-and-drop visual workflow builder. It's got interactive elements like gamification and automated custom experiences to try to get people more interested in what you're selling. Mailmodo also offers integrations with lots of other marketing tools, so if you're looking to improve your email marketing, it's a good option.
MailerLite is an email marketing tool with a drag-and-drop editor and automation abilities. It integrates with third-party apps like Stripe, Shopify and WordPress, so it's good for email marketing and e-commerce integration. MailerLite also offers a lot of documentation and 24/7 customer support to help you get the most out of your email campaigns.