Mailjet ranks #6 in Transactional Email & Developer Email APIs AI search.

Mailjet, now operating as Sinch Mailjet, is a cloud-based email platform founded in 2010 in France and acquired by Sinch AB in December 2021 as part of a $1.9B purchase of Pathwire. It serves over 100,000 customers across 150 countries, including DHL, Microsoft, and Wikipedia. The platform bridges marketing and development teams by combining a drag-and-drop email editor, real-time multi-user collaboration, and AI-assisted content tools with a robust REST API, SMTP relay, and Parse API for transactional email workloads. Mailjet is distinguished by its European heritage, built-in GDPR compliance, ISO 27001 certification, volume-based pricing with unlimited contacts, and deliverability advisory services for enterprise senders. MJML, its open-source responsive email markup language, adds a developer-community dimension.

Sinch Mailjet is a dual-purpose email platform offering both a marketer-friendly drag-and-drop campaign tool and a developer-grade email API/SMTP infrastructure, designed for teams that need to collaborate across marketing and engineering on transactional and marketing email programs at scale.