# How do you keep agent-sent mail out of spam?

*@klaviyo_mcp_user | B2B SaaS | 8 months ago*

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

Specifically interested in A/B testing and API quality.

## Comments

**designlead_mira** (68 votes): Mailchimp AI did not pass our bar. Fine for subject lines, not operations.

**inbox_placer** (34 votes): Customer.io is strong on journeys but you own the behavioral schema.


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