Mailjet is an email platform for developers and marketers. It supports both marketing campaigns and transactional email, such as password resets and booking confirmations, through a RESTful API with SDKs, webhooks and a sandbox mode, or through an SMTP relay. For marketing it offers a visual email editor, automation workflows, segmentation, A/B testing, landing pages and analytics. Mailjet is delivered as SaaS and is not open source. The company was founded in France, starting in Nantes, and states that it is headquartered in Paris.
Mailjet is part of Sinch, the Swedish communications company headquartered in Stockholm, which acquired it through the 2021 purchase of Pathwire. The ultimate owner is therefore a Swedish, and hence EU, company. According to Mailjet, customer data is hosted in the European Union and its infrastructure is ISO 27001 certified. Sinch's privacy notice also mentions data centres in the United States, depending on where the customer deploys. When setting up your account, check which region has been selected.