---
title: Observability
description: Attach lifecycle hooks or use the console observer for delivery diagnostics.
icon: ChartNoAxesColumn
source: "src/observability/console.ts"
---

<Callout title="The one rule">Capture metadata and durations, not message content or credentials.</Callout>

```ts
import { consoleObserver } from "sently/observability";

const mailer = await createMailer({ transport, hooks: consoleObserver("[mail]") });
```

<Cards><Card title="Hooks" href="/docs/channels/hooks" /></Cards>