MailerLite is an email marketing software platform that provides many tools for businesses. It allows users to create email campaigns, manage their mailing lists, segment those lists for targeted campaigns, analyze results, and more. PersistIQ is an outreach automation software designed to help salespeople contact and qualify leads faster. Its features include automated email signature management, contact tagging, automated follow-up email sequences, and more. The main difference between MailerLite and PersistIQ is that MailerLite is focused on email marketing functionality while PersistIQ offers a suite of sales tools. MailerLite is ideal for businesses that need an easy-to-use platform for creating and managing email campaigns. PersistIQ, on the other hand, is specifically designed to help salespeople quickly and efficiently contact and engage potential customers.