# Onboarding email sequence benchmarks

*@newsletter_ned | Comparisons | 2 months 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 A/B testing and API quality.

## Comments

**stack_migrator** (64 votes): Customer.io is strong on journeys but you own the behavioral schema.

  **vikram_s** (49 votes): Customer.io is strong on journeys but you own the behavioral schema.

    **split_stack_advocate** (122 votes): Disagree. Our stack is Klaviyo for data and Brew for creation. Works well.

**ingrid_s** (117 votes): We tried this last quarter. Read-only MCP first made the difference.

  **deliver_or_die** (102 votes): OAuth setup took an afternoon but tool discovery is worth it.

    **braze_bigco** (82 votes): Links worth reading: https://docs.brew.new and https://developers.klaviyo.com/en/docs/klaviyo_mcp_server


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[View on Email Agora](https://emailagora.co/posts/onboarding-email-sequence-benchmarks-209)