Best Email Marketing Software

Kit (formerly ConvertKit) is a creator-first email platform focused on newsletters, paid subscriptions, and automation. It offers tag-based subscribers, visual automations, and a clean writing experience.

Klaviyo is the dominant email and SMS platform for Shopify, BigCommerce and Magento merchants. Its data model turns raw store events into segments and revenue attribution out of the box.

Mailchimp is one of the most established email marketing platforms, offering campaign builders, marketing automation, landing pages, and audience segmentation designed for small and mid-market businesses.

Brevo (formerly Sendinblue) is a European email and SMS platform with a light CRM and transactional email API. Pricing is based on sends, not list size, which suits growing lists.