ActiveCampaign and Klaviyo are both popular marketing automation platforms. However, there are some key differences between them. For starters, ActiveCampaign offers a more comprehensive set of features and tools than Klaviyo. It focuses on customer relationships and uses automation to increase customer engagement. Its features include a CRM, predictive analytics, in-depth segmentation and automation capabilities, customizable forms and journeys, live chat support and a visual drag-and-drop builder. On the other hand, Klaviyo focuses on ecommerce-specific features such as abandoned cart recovery and personalized product recommendations. Its features also include comprehensive segmentation, analytics and reporting, A/B testing, and advanced data integrations. Klaviyo's pricing is also more affordable, making it a better option for smaller businesses. Ultimately, the choice between ActiveCampaign and Klaviyo comes down to what exactly the business needs.