MailPace

MailPace is a transactional email service for developers and organizations that need to send password resets, one-time passcodes, verification messages, notifications, and other application emails. The brand emphasizes fast delivery, privacy, and European data hosting, reporting an average Gmail delivery time of 1.19 seconds and more than 200 million emails delivered since 2021. Its infrastructure is described as EU-hosted and carbon neutral, and the service is designed not to track email opens or clicks.

MailPace offers a RESTful HTTP API and SMTP service, along with inbound email processing that converts messages into JSON webhooks. Additional features include delivery, bounce, and complaint notifications; idempotency keys for safer retries; and support for DKIM, SPF, and DMARC. Developers can integrate using languages such as Node.js, Ruby, Python, PHP, Go, and Elixir, with support for frameworks including Rails, Symfony, Laravel, and Express. MailPace offers a free tier and paid plans, with setup intended to take only minutes. It also provides documentation, email templates, developer guides, and performance metrics.