The problem persists unfortunately. The email polling seems to only work for a single email in the ‘to’ field.
Is there any chance of this being worked on?
@techapj @codinghorror @sam Is there any plans to fix the email-in polling to allow it to post to multiple categories?
I don’t have a hosting plan but would be willing to donate some money for a few beers 
Hi there,
We have very similar setup and needs as @brianmcdonald also have the same problem. Even setting
unique posts mins → 0
allow duplicate topic titles → true
are of no avail. Are there any plans to support this? Any thoughts or other ideas on this issue?
我正要就这个话题开个新帖，但刚找到了这个旧帖。我也遇到了同样的问题。我们以前也使用过一个邮件列表平台。
我们的总裁每周五会（通过电子邮件）向两个不同的类别发送重要信息。我们将 Discourse 类别视为社区，这些社区是私有的，并通过组权限进行保护。
我现在刚刚更改了本帖中提到的两个设置，但我认为这并不能解决问题？
抱歉，我刚刚尝试将一个主题同时发送到两个不同的类别，但似乎仍然无法做到。
更改这些设置允许您在短时间内将相同的内容发送到两个不同的类别，但它似乎需要每个主题一封电子邮件。