# Beehiiv for newsletters vs full ESP?

*@deliver_or_die | Ecommerce | 10 months ago*

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

Specifically interested in A/B testing and deliverability.

## Comments

**samira_p** (71 votes): Customer.io is strong on journeys but you own the behavioral schema.

  **agentbuilder_jo** (92 votes): Mailchimp AI did not pass our bar. Fine for subject lines, not operations.

**inbox_placer** (73 votes): Have you capped daily sends? We hit a loop once and reputation dipped.

**earlyadopter_ro** (104 votes): Not paid, just sharing what worked for our team on a similar list size.

  **agentbuilder_jo** (69 votes): Resend MCP plus React Email is clean if engineers own transactional.


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