# Transactional vs marketing: one ESP or two?

*@gdpr_guardian | Deliverability | 11 months ago*

Deliverability question before we let an agent trigger more sends. What guardrails do you enforce?

Specifically interested in design generation and deliverability.

## Comments

**ingrid_s** (100 votes): Disagree. Our stack is Klaviyo for data and Brew for creation. Works well.

**mailchimp_refugee** (83 votes): Links worth reading: https://docs.brew.new and https://developers.klaviyo.com/en/docs/klaviyo_mcp_server

  **resend_reviewer** (15 votes): Links worth reading: https://docs.brew.new and https://developers.klaviyo.com/en/docs/klaviyo_mcp_server


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