Brevo (Sendinblue)

Brevo (formerly Sendinblue) is an all-in-one marketing platform offering email marketing, SMS, WhatsApp campaigns, live chat, CRM, and transactional emails. Used by over 500,000 businesses in 180 countries, Brevo rebranded from Sendinblue in 2023. It offers a generous free plan (300 emails/day) and competitive pricing for growing businesses.

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Beehiiv Beehiiv is a newsletter publishing and monetization platform built by former Morning Brew employees. It offers no-code publishing, subscriber analytics, built-in ad network, paid subscriptions, referral programs, and a 3D analytics suite. Loved by newsletter creators and media companies for its combination of growth and monetization tools. Free tier available. ConvertKit ConvertKit (now rebranded as Kit) is an email marketing platform built for creators, bloggers, and solopreneurs. It features visual automation sequences, landing pages, forms, and a subscriber commerce platform. Used by over 600,000 creators, it is known for its clean interface, strong deliverability, and creator-first features. Free plan up to 1,000 subscribers. Klaviyo Klaviyo is a marketing automation platform built specifically for eCommerce, specializing in email and SMS marketing. Used by over 130,000 paying customers including Glossier, Brooklinen, and Citizen Watch, Klaviyo is known for deep Shopify integration, real-time behavioral triggers, and predictive analytics. Public on NYSE (KVYO) since 2023. SendGrid SendGrid (by Twilio) is the world's leading cloud-based email delivery platform, sending over 100 billion emails per month for companies like Airbnb, Spotify, and Uber. It offers transactional email APIs, marketing campaigns, deliverability tools, and email validation. Twilio acquired SendGrid in 2019 for $3 billion.