如何检测到收件人的电子邮件已被拒绝为垃圾邮件？ [英] How can I detect that an email has been rejected as spam by the recipient?

问题描述

我是否使用Rails 3。

解决方案

不，没有。邮件发送到接收方的SMTP服务器后，无法再跟踪它。

我知道你在想什么：一些邮件客户端跟踪电子邮件已被读取或未读取（例如在Outlook中）。他们可以通过在邮件（html）中添加一个 img -tag来实现。当用户打开邮件时，它将打开 img 的 src -attribute中指定的路径。既然这是一个脚本（如PHP或某些东西），那么当一个邮件打开时，它可以自动设置一个标志为'看到'。

当然还有一些但是，我认为这是最受欢迎的一种。

但是，无法检查邮件是否已被拒绝，删除或移动到垃圾邮件文件夹。

Is there a way to check if a sent e-mail has been marked as spam or deleted?

I work with Rails 3.

解决方案

No, there isn't. After your mail has been sent to your receiver's SMTP server, there's no way to track it down anymore.

I know what you're thinking: how can some mail-clients track down wether an email has been read or not (e.g. in Outlook). They can do this by adding a little img-tag to their mails (html). When a user opens the mail, it'll open the path specified in the img's src-attribute. Since that's a script (like PHP or something), it can automatically sets a flag to 'seen' when a mail has been opened.

Of course, there are some other ways to track this down, but I think this is the most popular one.

However, this can't be done to check whether a mail has been rejected, deleted or moved to the spam-folder.

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