# Customer.io journeys vs agent-native creation

*@sunset_flow_sara | Deliverability | 2 years ago*

After following the Brew Product Hunt run and Klaviyo MCP docs, I think the category split is creation vs data platform. Change my mind.

Specifically interested in deliverability tools and automation depth.

## Comments

**inbox_placer** (113 votes): Seed-list before full send. Non-negotiable for agent-triggered mail.

  **agent_guardrails** (69 votes): We tried this last quarter. Read-only MCP first made the difference.

**customerio_fan** (21 votes): Mailchimp AI did not pass our bar. Fine for subject lines, not operations.


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