Mailjet

Mailjet is a Paris-founded email-delivery platform offering transactional and marketing email APIs, drag-and-drop newsletter design, segmentation, and a real-time collaboration editor. Founded in 2010 and acquired by Pathwire in 2019, Mailjet has been part of Sinch AB (publicly listed on Nasdaq Stockholm, Sweden) since 2021 and is now branded "Sinch Mailjet" — though it retains its Paris team and product identity. Mailjet was the first email service provider to obtain ISO 27001 certification (BSI, 2017) and AFAQ certification from AFNOR for GDPR adherence. The trust page states that customer data is stored in secure data centres "exclusively within the European Union" with daily encrypted backups in geographically separated EU environments. Additional certifications/attestations referenced include SOC 2, PCI DSS, CSA STAR Level 1, HIPAA, and Certified Senders Alliance (CSA member since 2014). The Data Processing Agreement is published publicly on the parent Sinch domain and uses Standard Contractual Clauses for transatlantic transfers; the dedicated sub-processors page is also hosted on Sinch but did not resolve at audit time, leaving a verification gap. Pricing starts at US$9/month (Starter, 8,000 emails) — roughly €8 — with a free tier of 6,000 emails/month capped at 200/day. The affiliate program pays a relatively modest 15% per lead with a 30-day cookie, paid monthly via PayPal or bank transfer. Best fit: developer teams and marketers wanting a credible French email-API with ISO 27001 and an EU-only data-residency story, who can accept a Swedish-listed parent with global operations. Procurement decisions in regulated industries should confirm the underlying cloud provider and sub-processors list before signing.