c# 向多个收件人发送邮件

Question

我用它来发送邮件，我定义了一些包含值的包变量：

public MailProperties(ScriptObjectModel dts)
        {
            if (
             !string.IsNullOrEmpty((string)dts.Variables["$Package::mailFrom"].Value) &&
             !string.IsNullOrEmpty((string)dts.Variables["$Package::mailTo"].Value) &&
             !string.IsNullOrEmpty((string)dts.Variables["$Package::mailPwd"].GetSensitiveValue()) &&
             !string.IsNullOrEmpty((string)dts.Variables["$Package::mailSmtp"].Value) &&
             !string.IsNullOrEmpty((string)dts.Variables["$Package::mailPort"].Value)

             )
            {
                fromMail = (string)dts.Variables["$Package::mailFrom"].Value;
                toMail = (string)dts.Variables["$Package::mailTo"].Value;
                bccMail = (string)dts.Variables["$Package::mailBcc"].Value;
                accountPassword = (string)dts.Variables["$Package::mailPwd"].GetSensitiveValue();
                accountSmtp = (string)dts.Variables["$Package::mailSmtp"].Value;
                accountSmtpPort = (string)dts.Variables["$Package::mailPort"].Value;
                useSSL = (bool)dts.Variables["$Package::useSSL"].Value;


                pathAttachment = new List<string>();
                pathAttachment.Add((string)dts.Variables["User::pathFileReject"].Value);
                pathAttachment.Add((string)dts.Variables["User::pathFileReject2"].Value);
            }
            else
            {
                throw new Exception("error text...");
            }

        }

我需要向更多人发送邮件，所以我将 mailTo 设置为 mail1@gmail.com，mailBcc 为 mail2@gmail.com 并且它可以工作，但如果我将 mailBcc 设置为“mail2@gmail.com,mail3@gmail” .com" 或 "mail2@gmail.com; mail3@gmail.com" 不起作用，我该怎么做？

编辑：这是 sendMail 函数

public static void sendMail(MailProperties mailProperties, ReportETL reportETL)
        {
            MimeMessage message = new MimeMessage();
            message.From.Add(new MailboxAddress("text..", mailProperties.fromMail));
            message.To.Add(new MailboxAddress(mailProperties.toMail));
            message.Subject = "text...";

            if (!string.IsNullOrEmpty(mailProperties.bccMail))
            {
                message.Bcc.Add(new MailboxAddress(mailProperties.bccMail));
            }

            BodyBuilder bodyBuilder = new BodyBuilder();
            bodyBuilder.HtmlBody = ReportETLService.getHtmlFromReporETL(reportETL);

            mailProperties.pathAttachment.Where(x => File.Exists(x)).ToList().ForEach(y => bodyBuilder.Attachments.Add(y));

            message.Body = bodyBuilder.ToMessageBody();

            try
            {
                SmtpClient smtpClient = new SmtpClient();

                smtpClient.Connect(mailProperties.accountSmtp, int.Parse(mailProperties.accountSmtpPort), mailProperties.useSSL);
                smtpClient.Authenticate(mailProperties.fromMail, mailProperties.accountPassword);
                smtpClient.Send(message);

                smtpClient.Disconnect(true);
            }
            catch (Exception e) { throw new Exception("text... " + e.Message); }

        }

Answer 1

根据文档message.To 是列表类型。因此您可以像这样添加更多地址。

 InternetAddressList list = new InternetAddressList();

    list.add(adress1)
    list.add(adress2)
    list.add(adress3)
    list.add(adress4)
message.To.AddRange(list);

Answer 2

而不是使用密件抄送（这将是一个选项，但有最大数量的问题）只需遍历所有邮件地址并为每个收件人发送一个。 （不要快速，否则你会遇到其他问题） 这样，应该“更容易”发现无法投递的邮件。

Answer 3

好吧，假设您的 toMail、ccMail 和 bccMail 属性只是字符串而不是字符串列表，您可以这样做：

InternetAddressList list;

if (!string.IsNullOrEmpty(mailProperties.toMail) && InternetAddressList.TryParse (mailProperties.toMail, out list))
    message.To.AddRange(list);

if (!string.IsNullOrEmpty(mailProperties.ccMail) && InternetAddressList.TryParse (mailProperties.ccMail, out list))
    message.Cc.AddRange(list);

if (!string.IsNullOrEmpty(mailProperties.bccMail) && InternetAddressList.TryParse (mailProperties.bccMail, out list))
    message.Bcc.AddRange(list);