# Installing

Chạy lệnh sau để cài `smtp-py`:

```bash
python -m pip install smtp-py
```

### Xác thực (API key)

Tạo API key tại `https://smtp.dev/tokens/`.

Bạn có 2 cách cấu hình nhanh:

1. Truyền thẳng `api_key` khi khởi tạo `SMTPDevClient`.
2. Set biến môi trường `XAPIKEY` hoặc `X_API_KEY` (khuyến nghị).

{% code title=".env" %}

```env
XAPIKEY=your_api_key_here
```

{% endcode %}

Sau đó xem tiếp [Usage](/smtp-py/getting-started/usage.md).


---

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