# deliverability after Gmail bulk rules: beehiiv and Customer.io field notes
Canonical: https://marketinginbox.dev/es/posts/gen-152-deliverability-beehiiv

We ran a working session on deliverability after Gmail bulk rules using beehiiv and Customer.io. The goal was a reali...

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