> For the complete documentation index, see [llms.txt](https://helpdocs.ycloud.com/help-center/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://helpdocs.ycloud.com/help-center/zh/integrations/qu-dao/you-jian/dian-zi-you-jian-de-zui-jia-shi-jian/du-li-de-ying-xiao-zi-yu-ming.md).

# 独立的营销子域名

为了确保关键的客户特定电子邮件不受促销电子邮件的影响，我们建议根据功能分隔您的域的IP。这将有助于优化邮件递送。

 

域名对于您的网站来说是唯一的，例如[*ycloud.com*](http://ycloud.com/)。子域是主域名的一个子集，由前缀标识。

子域具有与主域名不同的信誉。这意味着，如果您公司的某人不小心发送了一封没有取消订阅链接的营销电子邮件，并且收件人投诉，您的主域的信誉将保持不变。

例如，您可以将以下子域用于不同的功能：

* <_marketing@marketing.company.com> 用于营销电子邮件\_
* <_support@support.company.com> 用于事务电子邮件，例如密码重置和订单确认\_。


---

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## Querying This Documentation
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