# Show categories in e-mail notifications **URL:** https://meta.discourse.org/t/show-categories-in-e-mail-notifications/13814 **Category:** Feature **Created:** [17 במרץ,‏ 2014,‏ 7:45pm UTC](https://meta.discourse.org/t/show-categories-in-e-mail-notifications/13814 "2014-03-17T19:45:54Z") **Posts on this page:** 12 **Page:** 3
### Author: ![downey](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/downey/32/166878_2.png) [@downey](https://meta.discourse.org/u/downey) #### Post date: [8 באוקטובר,‏ 2014,‏ 4:27pm UTC](https://meta.discourse.org/t/show-categories-in-e-mail-notifications/13814/41 "2014-10-08T16:27:42Z")
> [@codinghorror](#): > > The email headers already include these list meta fields. @codinghorror I’m not sure about @nukeador but my concern with the default headers currently in place is that a new `List-Id` is generated for each topic, which makes it impossible for users to create filters based on that List-Id: > `List-Unsubscribe: ` > `Auto-Submitted: auto-generated` > `List-Id: ` > `List-Archive: https://discourse.example.org/t/some-topic/618` Ideal usefulness: `List-Id: ` Next useful: `List-Id: ` Least useful: `List-Id: ` ---
### Author: ![nukeador](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/nukeador/32/107477_2.png) [@nukeador](https://meta.discourse.org/u/nukeador) #### Post date: [8 באוקטובר,‏ 2014,‏ 4:48pm UTC](https://meta.discourse.org/t/show-categories-in-e-mail-notifications/13814/42 "2014-10-08T16:48:15Z")
You are both right, I didn’t see that. And yes, list-id should be the category instead of the topic number to be useful for filtering. ---
### Author: ![codinghorror](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/codinghorror/32/110067_2.png) [@codinghorror](https://meta.discourse.org/u/codinghorror) #### Post date: [8 באוקטובר,‏ 2014,‏ 4:49pm UTC](https://meta.discourse.org/t/show-categories-in-e-mail-notifications/13814/43 "2014-10-08T16:49:50Z")
Ok, @techapj can you make that change to include category / subcategory there as indicated? ---
### Author: ![downey](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/downey/32/166878_2.png) [@downey](https://meta.discourse.org/u/downey) #### Post date: [8 באוקטובר,‏ 2014,‏ 5:45pm UTC](https://meta.discourse.org/t/show-categories-in-e-mail-notifications/13814/44 "2014-10-08T17:45:00Z")
Also, IMHO, `Precedence: list` needs to be in there as well as a default. Without that, we get “out of office” bounce-backs that turn into uncategorized topics on our Discourse site. 🙂 ---
### Author: ![codinghorror](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/codinghorror/32/110067_2.png) [@codinghorror](https://meta.discourse.org/u/codinghorror) #### Post date: [8 באוקטובר,‏ 2014,‏ 6:00pm UTC](https://meta.discourse.org/t/show-categories-in-e-mail-notifications/13814/45 "2014-10-08T18:00:38Z")
Where is that header documented? @techapj fine to add that header, but maybe not for things like email confirmation of accounts, etc. ---
### Author: ![downey](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/downey/32/166878_2.png) [@downey](https://meta.discourse.org/u/downey) #### Post date: [8 באוקטובר,‏ 2014,‏ 6:03pm UTC](https://meta.discourse.org/t/show-categories-in-e-mail-notifications/13814/46 "2014-10-08T18:03:43Z")
> [@codinghorror](#): > > Where is that header documented? [RFC 3834 - Recommendations for Automatic Responses to Electronic Mail](http://tools.ietf.org/html/rfc3834) in section 3.1.8. It’s interesting, because I just took it out a short while ago when I saw those other headers were now standard. It wasn’t an hour passed that I got an Outlook-generated OOO message responding to a digest, with someone’s phone number posted to our Discourse site. 😄 (So I put it back in, for now.) ---
### Author: ![codinghorror](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/codinghorror/32/110067_2.png) [@codinghorror](https://meta.discourse.org/u/codinghorror) #### Post date: [8 באוקטובר,‏ 2014,‏ 6:26pm UTC](https://meta.discourse.org/t/show-categories-in-e-mail-notifications/13814/47 "2014-10-08T18:26:31Z")
Good to know, I wasn’t aware of that one. We’ll add it! ---
### Author: ![techAPJ](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/techapj/32/342990_2.png) [@techAPJ](https://meta.discourse.org/u/techAPJ) #### Post date: [8 באוקטובר,‏ 2014,‏ 8:24pm UTC](https://meta.discourse.org/t/show-categories-in-e-mail-notifications/13814/48 "2014-10-08T20:24:40Z")
> [@nukeador](#): > > list-id should be the category instead of the topic number to be useful for filtering. [https://github.com/discourse/discourse/pull/2860](https://github.com/discourse/discourse/pull/2860) > [@downey](#): > > Precedence: list needs to be in there as well as a default. [https://github.com/discourse/discourse/pull/2861](https://github.com/discourse/discourse/pull/2861) ---
### Author: ![downey](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/downey/32/166878_2.png) [@downey](https://meta.discourse.org/u/downey) #### Post date: [8 באוקטובר,‏ 2014,‏ 10:18pm UTC](https://meta.discourse.org/t/show-categories-in-e-mail-notifications/13814/49 "2014-10-08T22:18:13Z")
It’s funny, now that `List-Id` is unique by category, we probably won’t even use categories in email subjects… 😛 > [@downey](#): > > If the category were specified in the subject line or an e-mail header, those people, could then automatically filter and sort notifications. But plenty of people love their [BRACKETS] so this is still a Good Thing. 👍 2 (biggest) lists left to move for us … fingers crossed. ---
### Author: ![codinghorror](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/codinghorror/32/110067_2.png) [@codinghorror](https://meta.discourse.org/u/codinghorror) #### Post date: [8 באוקטובר,‏ 2014,‏ 10:19pm UTC](https://meta.discourse.org/t/show-categories-in-e-mail-notifications/13814/50 "2014-10-08T22:19:12Z")
Luckily you can edit `email subject` site setting to taste to customize your email subject, right? 😉 Thanks @techAPJ! ---
### Author: ![downey](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/downey/32/166878_2.png) [@downey](https://meta.discourse.org/u/downey) #### Post date: [13 באוקטובר,‏ 2014,‏ 7:07pm UTC](https://meta.discourse.org/t/show-categories-in-e-mail-notifications/13814/51 "2014-10-13T19:07:41Z")
OK, I’ve tested everything I can on this. Subject lines, `List-Id`, `Precedence`, everything seems to be working as I’d expect. 🏁 🏆 ---
### Author: ![codinghorror](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/codinghorror/32/110067_2.png) [@codinghorror](https://meta.discourse.org/u/codinghorror) #### Post date: [13 בספטמבר,‏ 2017,‏ 3:26am UTC](https://meta.discourse.org/t/show-categories-in-e-mail-notifications/13814/52 "2017-09-13T03:26:23Z")
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