# Warn user when entering mail address for category that exists for group
**URL:** https://meta.discourse.org/t/warn-user-when-entering-mail-address-for-category-that-exists-for-group/40742
**Category:** UX
**Created:** [2016 年 3 月 8 日午後 12:07 UTC](https://meta.discourse.org/t/warn-user-when-entering-mail-address-for-category-that-exists-for-group/40742 "2016-03-08T12:07:25Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Sander78](https://meta.discourse.org/u/Sander78)
#### Post date: [2016 年 3 月 8 日午後 12:07 UTC](https://meta.discourse.org/t/warn-user-when-entering-mail-address-for-category-that-exists-for-group/40742/1 "2016-03-08T12:07:26Z")
When you have a mail address attached to a group and later attach that same address to a category, you won’t get a confirmation. The incoming mails will go to the group.
On small forums it’s easy to find where that address is, but on bigger forums with multiple admins you get lost.
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### Author:  [@zogstrip](https://meta.discourse.org/u/zogstrip)
#### Post date: [2016 年 3 月 8 日午後 7:53 UTC](https://meta.discourse.org/t/warn-user-when-entering-mail-address-for-category-that-exists-for-group/40742/2 "2016-03-08T19:53:14Z")
I agree. Just made sure we don’t allow the re-use of an incoming email address 📬
[https://github.com/discourse/discourse/commit/031146a82182dc5c85d4f82c1695a447570bc34e](https://github.com/discourse/discourse/commit/031146a82182dc5c85d4f82c1695a447570bc34e)
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### Author:  [@codinghorror](https://meta.discourse.org/u/codinghorror)
#### Post date: [2016 年 3 月 8 日午後 10:54 UTC](https://meta.discourse.org/t/warn-user-when-entering-mail-address-for-category-that-exists-for-group/40742/3 "2016-03-08T22:54:56Z")