C#发送邮件给多个收件人

Question

我用这个来发送邮件，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...");
            }

        }

我需要向更多的人发送邮件，所以我把mailTo设置为[email protected]，mailBcc设置为[email protected]，这样就可以了，但是如果我把mailBcc设置为 "[email protected]，[email protected] "或者 "[email protected]；[email protected] "就不行了，我该怎么做呢？

EDIT：这是sendMail的功能

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.所以你可以像这样添加更多的地址。

 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BCC(这也是一个选项，但有最大计数的问题)只是迭代所有的邮件地址，并为每个收件人发送一个。(不要太快，否则会有其他问题。)这样一来，应该可以 "更容易 "地发现那些不会被送达的邮件。

Answer 3

那么，假设你的 toMail, ccMail和 bccMail 属性只是字符串而不是字符串列表，你可以这样做。

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);