Drip is an email marketing automation tool, meaning it's designed to help businesses automate their email campaigns and workflows. It has features for segmentation, personalisation, and A/B testing.
Sendinblue, on the other hand, is an all-in-one marketing tool that includes email campaigns, SMS messaging, and transactional emails, as well as automation features.
Both Drip and Sendinblue offer integrations with popular platforms such as Shopify, WooCommerce, and WordPress, but Drip has more integrations available overall.