Mailchimp is an email marketing software platform while PersistIQ is a sales engagement platform. Mailchimp provides a suite of tools to help users manage, create, and track email marketing campaigns. It features email list segmentation, engagement metrics, email testing, automation, and more. PersistIQ, on the other hand, seeks to help its users maximize their sales productivity. It allows users to create custom email templates, track prospect engagement, and sync with CRM systems so users can progress leads in the sales workflow. Unlike Mailchimp, PersistIQ does not offer any marketing automation features.