# Discourse Emails not threaded properly in some Email clients

**URL:** https://meta.discourse.org/t/discourse-emails-not-threaded-properly-in-some-email-clients/44444
**Category:** Support
**Created:** [18.Май.2016 15:43:54 UTC](https://meta.discourse.org/t/discourse-emails-not-threaded-properly-in-some-email-clients/44444 "2016-05-18T15:43:54Z")
**Posts on this page:** 1
**Showing post:** 6

<div class="post-metadata">

### Author: ![eksperimental](https://avatars.discourse-cdn.com/v4/letter/e/4bbf92/32.png) [@eksperimental](https://meta.discourse.org/u/eksperimental)
#### Post date: [17.Сентябрь.2016 20:55:42 UTC](https://meta.discourse.org/t/discourse-emails-not-threaded-properly-in-some-email-clients/44444/6 "2016-09-17T20:55:42Z")

</div>

So being that the case most of the issues are still valid, because you are using a message-id of a message that has never been posted.

This is how I think it should be the Discourse version (changes surrounded by ` **asterisks** `)

```
1) Original Post
Date: Sat, 17 Sep 2016 04:52:11 +0000
From: Paul <noreply@elixirforum.com>
Reply-To: Elixir Forum <mailserver+b4b32a98d201ecf58eef9e4c7510b978@elixirforum.com>
Message-ID: <topic/1689/10607@elixirforum.com>
**In-Reply-To: [SHOULD NOT BE PRESENT]**
**References: [SHOULD NOT BE PRESENT]**
Subject: [Elixir Forum] [Elixir Help] Semi-Manual backpressure

2) Answer to no. 1
Date: Sat, 17 Sep 2016 14:04:13 +0000
From: José Valim <noreply@elixirforum.com>
Reply-To: Elixir Forum <mailserver+81161440220741d3b07fff9c53460ba1@elixirforum.com>
Message-ID: <topic/1689/10618@elixirforum.com>
**In-Reply-To: <topic/1689/10607@elixirforum.com>**
 **References: <topic/1689/10607@elixirforum.com>**
Subject: [Elixir Forum] [Elixir Help] GenStage Semi-Manual backpressure

3) Answer to no. 1
Date: Sat, 17 Sep 2016 14:59:21 +0000
From: José Valim <noreply@elixirforum.com>
Reply-To: Elixir Forum <mailserver+5a396d7011668a282e6465a58028ae8a@elixirforum.com>
Message-ID: <topic/1689/10623@elixirforum.com>
**In-Reply-To: <topic/1689/10607@elixirforum.com>**
 **References: <topic/1689/10607@elixirforum.com>**
Subject: [Elixir Forum] [Elixir Help] GenStage Semi-Manual backpressure

```

based on the idea that [topic/1689@elixirforum.com](mailto:topic/1689@elixirforum.com) is an ID of a message that never existed (let’s call it “topic message id”)

I think there are few things causing trouble:

- setting in the original post a “In-Reply-To” HEADER, with a reference to the non-existant topic message id.
- setting references to a non-existant ID
- In-Reply-To does not contain the message id of the message it’s replying to, but the non-existant topic message id, so making it impossible for some email clients to build the thread.

---

_[View the full topic](https://meta.discourse.org/t/discourse-emails-not-threaded-properly-in-some-email-clients/44444)._