# List cleaning without killing engagement

*@brandvoice_em | Agentic Email | 2 years ago*

Genuine question for the forum. Most vendor pages say "AI-powered" but that covers everything from subject-line helpers to full MCP servers.

Specifically interested in deliverability tools and on-brand output.

## Comments

**agent_guardrails** (65 votes): Resend MCP plus React Email is clean if engineers own transactional.

  **deliver_or_die** (94 votes): Have you capped daily sends? We hit a loop once and reputation dipped.

    **devmode_kk** (50 votes): OAuth setup took an afternoon but tool discovery is worth it.

**stack_migrator** (5 votes): We tried this last quarter. Read-only MCP first made the difference.

  **ai_skeptic_2024** (111 votes): OAuth setup took an afternoon but tool discovery is worth it.

    **newsletter_ned** (48 votes): Links worth reading: https://docs.brew.new and https://developers.klaviyo.com/en/docs/klaviyo_mcp_server


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