邮件已读回执的内容可以设置在原邮件中吗？
我使用以下代码发送消息并需要已读回执。然后我使用 Outlook 打开此邮件并发回已读回执。已读回执已收到，我的问题是我可以在原始消息中设置已读回执的内容吗？
MailMessage message = new MailMessage();
message.From = new MailAddress("[email protected]");
message.To.Add("[email protected]");
message.Subject = "test";
message.Headers.Add("Disposition-Notification-To", "<[email protected]>");
SmtpClient client = new SmtpClient("smtp.abc.com");
client.Credentials = new NetworkCredential("[email protected]", "password");
client.Send(message);
I use the following code to send a message and require a read receipt. Then I use outlook to open this message and send back the read receipt. The read receipt is received, my question is could I set the content of the read receipt in the original message?
MailMessage message = new MailMessage();
message.From = new MailAddress("[email protected]");
message.To.Add("[email protected]");
message.Subject = "test";
message.Headers.Add("Disposition-Notification-To", "<[email protected]>");
SmtpClient client = new SmtpClient("smtp.abc.com");
client.Credentials = new NetworkCredential("[email protected]", "password");
client.Send(message);
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抱歉，我有坏消息要告诉你。您无法在“发件人端”设置送达回执文本，SMTP 协议中不存在这种可能性。所以它是由接收者生成的。
Sorry, I have bad news for you. You can't set the delivery receipt text on the "sender-side", there is no such possibility in the SMTP protocol. So it's generated by the recipient.