# transactional vs marketing stacks: Customer.io and ActiveCampaign field notes
Canonical: https://marketinginbox.dev/pt-BR/posts/gen-183-transactional-customer-io

We ran a working session on transactional vs marketing stacks using Customer.io and ActiveCampaign. The goal was a re...

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