Brevo offers a more affordable pricing strategy, with its free plan allowing for up to 9,000 emails per month and unlimited contacts, while Mailchimp's free plan has a lower contact limit of 500 and only allows for 1,000 emails per month. Brevo also provides better subscriber segmentation features, including the ability to segment in lists and groups, add tags, and target each with campaigns and automation, all available on its free plan. In contrast, Mailchimp's free plan has more limited segmentation features. Additionally, Brevo offers transactional email on all plans, including its free one, while Mailchimp requires a paid plan for this feature. While both platforms have AI-powered tools, Mailchimp takes the lead in terms of advanced analytics and native integrations with eCommerce stores. However, if price is an issue, Brevo can send a lot of emails without asking as much in return, making it a more affordable option for those on a budget. Overall, Brevo may be the better choice for those prioritizing affordability and strong subscriber segmentation features, while Mailchimp might be preferred by businesses seeking advanced analytics and seamless integrations with eCommerce stores.