即使实现了 List-Unsubscribe 标头，“从邮件列表取消订阅”链接也不会显示

Question

我们正在实施 List-Unsubscribe 标头，以遵守 Gmail 发件人指南。在进行测试时，我们注意到“从邮件列表退订”链接没有出现在收件人端的 Gmail 客户端中。

对于这个问题有什么潜在的原因吗？

下面，我提供标题数据（出于隐私考虑，编辑了一些信息）。

Delivered-To: ****@*******.***
Received: by 2002:a05:6520:4646:b0:283:91a:1adb with SMTP id el6csp795303lkb;
        Thu, 7 Dec 2023 01:47:51 -0800 (PST)
X-Google-Smtp-Source: AGHT+IGkrxRIriFcwqWDTLZPZDyX5RuCa+ot/NqD6tt21gj6L277nrfC2x3Zl7JRzTu1QcYm9j7i
X-Received: by 2002:a05:6a20:1444:b0:187:eea9:73c5 with SMTP id a4-20020a056a20144400b00187eea973c5mr2887137pzi.3.1701942471560;
        Thu, 07 Dec 2023 01:47:51 -0800 (PST)
ARC-Seal: i=1; a=rsa-sha256; t=1701942471; cv=none;
        d=google.com; s=arc-20160816;
        b=GS5MDCFcvdw0Nx38THlBQmTf/KBckJf9kIS2ZKCVZoYvIdheBNA4vrTcYERxOILXIF
         QCQohBLkTVeVO9y1em0tTS5d7CEduYlNWoR6ay+CLzQSxNbpKtxvU8ECapg3mkxaLjcQ
         tDDAALDfRiDJxlsnrNmiITEBuVwNNmOldWXeUlKNN6OYqvBKqGaJghZS3B+HeoJ1AzjH
         o9/db0wY7T/LtBekGHcfQvBu33oBZUWpLmaNbBnKupglvx0kEc9foRaBL98jISXNEKD9
         uK4qxg4e421JDiaY+/w7yDjcNND0x38nhA4R8miCY4ujAm0J7AEyQTdXWVbbHqCojXyS
         weqw==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
        h=content-transfer-encoding:date:errors-to:from:list-unsubscribe
         :list-unsubscribe-post:message-id:mime-version:subject:to;
        bh=f6DQBjo8rYX19JpB+nIPzKzcW1UlXBE5kq7UPzfAJfg=;
        fh=m4DbYAsBOnwc1IUh2REZnorY/4DwaOqFeBwm9y++uQU=;
        b=qOyTVHWiNRQsIFjOQ/3BZwzjmympKlkaKuz0repcIqpRi4HPqh6XPA7xfTob34gamI
         gbga9G4Cj+5QC350sOoJEIrCIENRvNPIgdi8jk58KuLBhmwGRUhi3IZkGkWSdac0gnfI
         fvk11SsUHhFmfJIDbr31m8Vgm4kwbmknrdVbbkQKX1hSpcGpIZpYa34RkAyoJznGQJS6
         CFxCQAT2KaJMcKQS3PPkSy+VPS9W4eJuDO4Bapdj+WcSwnZQ8aCWutAJ8dtDSZHteKIS
         mBor2qgK2Qf3zuxvke8VAbKzoqqqooqA9RbbENf+IBawn3avvHTI1YXUM3A5JxW0wg3L
         8+7Q==
ARC-Authentication-Results: i=1; mx.google.com;
       spf=pass (google.com: domain of *****-*********-****************@*******.*** designates xxx.xxx.xxx.xxx as permitted sender) smtp.mailfrom=*****-*********-****************@*******.***
Return-Path: <*****-*********-****************@*******.***>
Received: from xx-xxxx-xx-xx ([xxx.xxx.xxx.xxx])
        by mx.google.com with SMTP id i1-20020a654841000000b005b90af19430si880828pgs.595.2023.12.07.01.47.50
        for <****@*******.***>;
        Thu, 07 Dec 2023 01:47:51 -0800 (PST)
Received-SPF: pass (google.com: domain of *****-*********-****************@*******.*** designates xxx.xxx.xxx.xxx as permitted sender) client-ip=xxx.xxx.xxx.xxx;
Authentication-Results: mx.google.com;
       spf=pass (google.com: domain of *****-*********-****************@*******.*** designates xxx.xxx.xxx.xxx as permitted sender) smtp.mailfrom=*****-*********-****************@*******.***
Received: (qmail 20406 invoked from network); 7 Dec 2023 18:47:49 +0900
Received: from unknown (HELO staging-server) (xx.xxx.xxx.xxx)
  by 0 with SMTP; 7 Dec 2023 18:47:49 +0900
X-Sender: *****-*********-****************@*******.***
X-Mailer: Edge Mailer
To: ****@*******.***
Subject: title
Return-Path: *****-*********-****************@*******.***
Mime-Version: 1.0
Message-Id: <**********.20293.lKhhZA@staging-server>
List-Unsubscribe-Post: List-Unsubscribe=One-Click
List-Unsubscribe: <https://api.********.***/*****************>
From: ****@*******.***
Errors-To: *****-*********-****************@*******.***
Date: Thu, 7 Dec 2023 18:47:49 +0900
Content-Type: text/plain; charset="iso-2022-jp"
Content-Transfer-Encoding: 7bit

Answer 1

是的，我们也看到了这一点：https://github.com/knadh/listmonk/issues/1655 - 根据我在第一个回复中的测试，

list-unsubscribe

标头目前似乎没有任何用处 - - 这似乎是 Gmail 自动执行的操作。我没有看到任何有关

list-unsubscribe

被弃用的信息，但似乎确实如此。

根据 https://9to5google.com/2014/08/06/gmail-adds-easy-to-find-unsubscribe-button-next-to-senders-address/ 它仅显示在 Gmail 促销中的电子邮件、社交和论坛收件箱。