# The Send to API step tells you when a domain is blocked

> <p>When your org&rsquo;s domain allowlist blocked the destination, a <strong>Send to API</strong> step would appear to succeed, even though it was blocked. The step now fails, names the blocked domain, and shows the prompt to add it on the integrations page.</p>

Source: https://parabola.io/updates/the-send-to-api-step-tells-you-when-a-domain-is-blocked