怎么知道附件是下载还是没有? [英] how can know attachment is download or no?

问题描述

大家好
我有一个发送电子邮件的程序
我想在打开附件或通过接收方下载时发送带有附件的电子邮件时，会为我发送通知或其他信息...
我该怎么做?? a
注意附着
我可以嵌入链接吗?
怎么样?
您的建议吗?
谢谢您的时间.

hi everybody
i have one program for sending email
i wanna when i send email with attachment when attachment open or download with receiver will send for me notification or somthing...
how can i do this???a
attention for attach
can i embed link??
how??
your advice??
thank you for your time

推荐答案

电子邮件不支持这种功能.您无法知道收件人是否下载了附件.

您唯一可能知道的方法是，您的附件是否未附加到电子邮件中，而是发布到网站上，并且您向收件人发送了网站上附件的链接.

垃圾邮件发送者通常使用此技术，因此这并不是一件好事.

Email doesn''t support such a facility. There is no way for you to know if the recipient downloaded the attachment or not.

The only way you could possibly know is if your attachment wasn''t attached to the email, but posted to a website and you sent the recipient a link to the attachment on the website.

This technique is commonly used by spammers, so it''s not really a good thing to do.

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