Milo

Milo is an innovative SaaS tool designed for developers and customer support teams aiming to rigorously test their AI email support agents before deploying them to real customers. It creates realistic, scripted customer personas—such as angry refund seekers, GDPR requesters, or silent clients—that interact with your AI via real SMTP, ensuring responses are consistent and deterministic. This setup allows teams to simulate complex support scenarios, identify potential weaknesses, and improve AI performance in a controlled environment. Unique features include no reliance on large language models in the reply path, deterministic replies for repeatability, and APIs for conversation assertions, making it highly suitable for CI/CD pipelines. The onboarding process is straightforward, requiring only an email to get started, and its strict mode ensures no vague promises slip through. Overall, Milo offers a robust platform for testing and refining AI support agents with real-world fidelity, making it invaluable for QA teams and AI developers striving for reliable customer support solutions.