# transactional vs marketing stacks: Resend and Klaviyo field notes
Canonical: https://marketinginbox.dev/fr/posts/gen-258-transactional-resend

We ran a working session on transactional vs marketing stacks using Resend and Klaviyo. The goal was a realistic week...

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