# メールの返信における「返信先」と「返信リスト」の混同

**URL:** https://meta.discourse.org/t/confusion-between-reply-to-and-reply-list-in-email-responses/179513
**Category:** UX
**Created:** [2021 年 2 月 12 日午後 9:58 UTC](https://meta.discourse.org/t/confusion-between-reply-to-and-reply-list-in-email-responses/179513 "2021-02-12T21:58:59Z")
**Posts on this page:** 6
**Page:** 3

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### Author: ![Jonathan5](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/jonathan5/32/197134_2.png) [@Jonathan5](https://meta.discourse.org/u/Jonathan5)
#### Post date: [2021 年 10 月 6 日午前 9:57 UTC](https://meta.discourse.org/t/confusion-between-reply-to-and-reply-list-in-email-responses/179513/45 "2021-10-06T09:57:24Z")

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見てから時間が経っているので、もしかしたら間違っているかもしれませんが、その問題（何だったかは定かではありません）を解決するために、2〜3個のヘッダーが一度に追加されたのだと思います。List-Postは単に不要だったのでしょう。

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### Author: ![zogstrip](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/zogstrip/32/512781_2.png) [@zogstrip](https://meta.discourse.org/u/zogstrip)
#### Post date: [2021 年 10 月 6 日午前 10:00 UTC](https://meta.discourse.org/t/confusion-between-reply-to-and-reply-list-in-email-responses/179513/46 "2021-10-06T10:00:29Z")

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`List-Post` ヘッダーは以前に追加されたもののようです。

> <https://github.com/discourse/discourse/commit/beaa1455729c8a442e37e9f23d908fa7677ce0cb>

現在は不要かもしれません。調査します。

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### Author: ![Jonathan5](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/jonathan5/32/197134_2.png) [@Jonathan5](https://meta.discourse.org/u/Jonathan5)
#### Post date: [2021 年 10 月 6 日午前 10:05 UTC](https://meta.discourse.org/t/confusion-between-reply-to-and-reply-list-in-email-responses/179513/47 "2021-10-06T10:05:01Z")

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これについて私がいくつか投稿しました：

> [@Confusion between Reply To and Reply List in email responses](https://meta.discourse.org/t/confusion-between-reply-to-and-reply-list-in-email-responses/179513/20?u=jonathan5):
>
> I guess you’re right and the presence of the List-Post header understandably makes Thunderbird think it’s a mailing list email. Probably a Reply-To header would suffice. The following is from [RFC 2369 - The Use of URLs as Meta-Syntax for Core Mail List Commands and their Transport through Message Header Fields](https://tools.ietf.org/html/rfc2369)[3.4](https://tools.ietf.org/html/rfc2369#section-3.4). List-Post The List-Post field describes the method for posting to the list. This is typically the address of the list, but MAY be a moderator, or potentially some other form of sub…

元の問題の説明はこちらです：

> [@Emails are not threaded in Outlook 2013](https://meta.discourse.org/t/emails-are-not-threaded-in-outlook-2013/16501?u=jonathan5):
>
> When turning on emails for every post to a forum, the emails do not thread correctly, at least in Outlook 2013. It looks like there’s an attempt to make it work, based on the In-Reply-To headers, but somehow it’s still not working :(. I imagine Outlook has some strange heuristics you might have to appease…

List-Post は、その目的を一切考慮せずにどこかから無批判にコピーされたものです。スレッド化とは何の関係もありません（少なくとも私の知る限りでは！ :-)）

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### Author: ![Flominator](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/flominator/32/235031_2.png) [@Flominator](https://meta.discourse.org/u/Flominator)
#### Post date: [2021 年 10 月 7 日午後 12:14 UTC](https://meta.discourse.org/t/confusion-between-reply-to-and-reply-list-in-email-responses/179513/48 "2021-10-07T12:14:42Z")

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参考になれば： **Mail-Reply-To** ヘッダーに、Reply-Toと同じメールアドレスを追加することで、Thunderbirdの問題も解決します。

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### 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: [2021 年 10 月 12 日午後 8:46 UTC](https://meta.discourse.org/t/confusion-between-reply-to-and-reply-list-in-email-responses/179513/49 "2021-10-12T20:46:30Z")

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ヘッダーを削除することで問題が解決するようなら、その対応をすべきです。ただし、まずはコード全体を精査し、どこでも使用されていないことを確認してください。

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### Author: ![zogstrip](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/zogstrip/32/512781_2.png) [@zogstrip](https://meta.discourse.org/u/zogstrip)
#### Post date: [2021 年 10 月 13 日午前 7:48 UTC](https://meta.discourse.org/t/confusion-between-reply-to-and-reply-list-in-email-responses/179513/50 "2021-10-13T07:48:18Z")

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@nbianca が調査し、[このコミット](https://github.com/discourse/discourse/pull/14554) で削除しました。彼女は以下の場所で返信しています。

> [@Reply-key variable doesn't get expanded in email custom headers](https://meta.discourse.org/t/reply-key-variable-doesnt-get-expanded-in-email-custom-headers/205134):
>
> Hi there, while trying to fix the problem that Thunderbird users cannot reply to Discourse notification emails I discovered this matter. Details at [Confusion between Reply To and Reply List in email responses - #40 by Flominator](https://meta.discourse.org/t/confusion-between-reply-to-and-reply-list-in-email-responses/179513/40) Can we fix this? Is there maybe a patch or something? Thanks in advance Flo

[前のページ](https://meta.discourse.org/t/confusion-between-reply-to-and-reply-list-in-email-responses/179513.md?page=2)
