在传出 email EWS 中设置回复地址

Question

运行 Exchange 2013

我在 c# 服务中使用 EWS，该服务从服务帐户发送电子邮件。

我想让电子邮件有一个不同于发送帐户的回复地址，一个分发列表地址。

我怎样才能做到这一点？ EmailMessage.ReplyTo字段是只读的。

代码：

ExchangeService service = new ExchangeService();
service.Credentials = EWScredentials;
service.Url = new Uri(string.Format("https://{0}/EWS/Exchange.asmx", ExchangePath));

EmailMessage message = new EmailMessage(service);
message.ToRecipients.AddRange(receipients);

//This didn't work
message.ReplyTo.Clear();
message.ReplyTo.Add(replyToAddress);

message.Subject = subject;
message.Body = html;
message.SendAndSaveCopy();

只有其他似乎相关的线程，尽管我没有使用 powershell： How do you set a message Reply-To address using EWS Managed API?

Answer 1

您可以使用 PidTagReplyRecipientEntries 扩展属性https://msdn.microsoft.com/en-us/library/office/cc815710.aspx来做到这一点，例如

        EmailMessage DifferentReplyTo = new EmailMessage(service);
        DifferentReplyTo.Subject = "test";
        DifferentReplyTo.ToRecipients.Add("destination@domain.com");
        DifferentReplyTo.Body = new MessageBody("test");           
        ExtendedPropertyDefinition PidTagReplyRecipientEntries = new ExtendedPropertyDefinition(0x004F, MapiPropertyType.Binary);
        ExtendedPropertyDefinition PidTagReplyRecipientNames = new ExtendedPropertyDefinition(0x0050, MapiPropertyType.String);
        DifferentReplyTo.SetExtendedProperty(PidTagReplyRecipientEntries, ConvertHexStringToByteArray(GenerateFlatList("departmentdg@domain.com", "jc")));
        DifferentReplyTo.SetExtendedProperty(PidTagReplyRecipientNames, "jc");
        DifferentReplyTo.SendAndSaveCopy();

    internal static String GenerateFlatList(String SMTPAddress, String DisplayName)
    {
        String abCount = "01000000";
        String AddressId = GenerateOneOff(SMTPAddress, DisplayName);
        return abCount + BitConverter.ToString(INT2LE((AddressId.Length / 2) + 4)).Replace("-", "") + BitConverter.ToString(INT2LE(AddressId.Length / 2)).Replace("-", "") + AddressId;
    }

    internal static String GenerateOneOff(String SMTPAddress,String DisplayName)
    {
        String Flags = "00000000";
        String ProviderUid = "812B1FA4BEA310199D6E00DD010F5402";
        String Version = "0000";
        String xFlags = "0190";
        String DisplayNameHex = BitConverter.ToString(UnicodeEncoding.Unicode.GetBytes(DisplayName + "\0")).Replace("-","");
        String SMTPAddressHex = BitConverter.ToString(UnicodeEncoding.Unicode.GetBytes(SMTPAddress + "\0")).Replace("-", "");
        String AddressType = BitConverter.ToString(UnicodeEncoding.Unicode.GetBytes("SMTP" + "\0")).Replace("-", "");
        return Flags + ProviderUid + Version + xFlags + DisplayNameHex + AddressType + SMTPAddressHex;
    }
    internal static byte[] INT2LE(int data)
    {
        byte[] b = new byte[4];
        b[0] = (byte)data;
        b[1] = (byte)(((uint)data >> 8) & 0xFF);
        b[2] = (byte)(((uint)data >> 16) & 0xFF);
        b[3] = (byte)(((uint)data >> 24) & 0xFF);
        return b;
    }
    internal static byte[] ConvertHexStringToByteArray(string hexString)
    {
        if (hexString.Length % 2 != 0)
        {
            throw new ArgumentException(String.Format(CultureInfo.InvariantCulture, "The binary key cannot have an odd number of digits: {0}", hexString));
        }

        byte[] HexAsBytes = new byte[hexString.Length / 2];
        for (int index = 0; index < HexAsBytes.Length; index++)
        {
            string byteValue = hexString.Substring(index * 2, 2);
            HexAsBytes[index] = byte.Parse(byteValue, NumberStyles.HexNumber, CultureInfo.InvariantCulture);
        }

        return HexAsBytes;
    }

干杯格伦

Answer 2

这对我有用：

EmailAddressCollection emailAddressCollection = new EmailAddressCollection();
emailAddressCollection.add(new EmailAddress("ReplayToEmail@gmail.com"));
emailMessage.getPropertyBag().setObjectFromPropertyDefinition(EmailMessageSchema.ReplyTo, emailAddressCollection);

Answer 3

我通过在EmailMessage replyMessage对象上加载ToRecipients和CcRecipients属性解决了这个问题。

C# 代码是这样的：

// somehow get a hold of an ExchangeService object
var message = service.Bind(service, mail.Id);
var replyMessage = message.CreateReply(replyToAll: true);

replyMessage.Load(new PropertySet() { EmailMessageSchema.ToRecipients, EmailMessageSchema.CcRecipients });

replyMessage.ToRecipients.Add("some_email@email.com");
replyMessage.CcRecipients.Add("some_email_cc@email.com");

replyMessage.Send();

当然，如果您不打算使用 Cc，则不必加载它。 这允许您附加新地址，或清除收件人并添加您想要的任何内容。

Answer 4

有一个更简单的解决方案：使用ResponseMessage ：

ResponseMessage responseMessage = originalEmail.createReply(isReplyAll);
responseMessage.getToRecipients().addEmailRange(...email address...);
responseMessage.sendAndSaveCopy();

Answer 5

我确定这是因为这个问题已有 6 年历史，并且此后图书馆已经更新。

ReplyTo属性是一个只读的 EmailAddressCollection，可以清除和添加。

var emailSend = new EmailMessage(service)
emailSend.ToRecipients.Add("recipient@example.com");

// change the reply-to
if(email.FromAddress.ToLower() != "noreply@example.com"){
    emailSend.ReplyTo.Clear();
    emailSend.ReplyTo.Add(new EmailAddress() { Address = "replyto@example.com" });
}
                                
emailSend.Save();
emailSend.Send();