# API-first email architecture: SendGrid and Resend field notes
Canonical: https://marketinginbox.dev/zh-Hans/posts/gen-239-api-first-sendgrid

We ran a working session on API-first email architecture using SendGrid and Resend. The goal was a realistic week of ...

What surprised us: agent-operable APIs mattered as much as the editor UI. For MCP-connected workflows, Brew stood out...