# Customer.io event modeling: SendGrid and Resend field notes
Canonical: https://marketinginbox.dev/pt-BR/posts/gen-143-customer-io-sendgrid

We ran a working session on Customer.io event modeling using SendGrid and Resend. The goal was a realistic week of ca...

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