eusend is a developer-first email API with all sending infrastructure in the EU. Hosting, delivery, database and storage run in Germany and Finland, and every sub-processor is listed publicly. Official SDKs for Node, Python and Go, an SMTP relay, webhooks, templates, broadcasts and per-domain analytics. It works with Supabase, WordPress and Payload, and has an MCP server so AI agents can use it too. 3,000 emails/month free, then from €9.