在外发电子邮件EWS中设置回复地址

运行Exchange 2013

我在ac＃服务中使用EWS，它从服务帐户发送电子邮件。

我希望电子邮件的回复地址与发送帐户不同，即分发列表地址。

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

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，虽然我没有使用PowerShell： 如何使用EWS托管API设置消息回复地址？

Answer 1

您可以使用PidTagReplyRecipientEntries扩展属性https://msdn.microsoft.com/en-us/library/office/cc815710.aspx来执行此操作，例如

  EmailMessage DifferentReplyTo = new EmailMessage(service); DifferentReplyTo.Subject = "test"; DifferentReplyTo.ToRecipients.Add("[e-mail]"); DifferentReplyTo.Body = new MessageBody("test"); ExtendedPropertyDefinition PidTagReplyRecipientEntries = new ExtendedPropertyDefinition(0x004F, MapiPropertyType.Binary); ExtendedPropertyDefinition PidTagReplyRecipientNames = new ExtendedPropertyDefinition(0x0050, MapiPropertyType.String); DifferentReplyTo.SetExtendedProperty(PidTagReplyRecipientEntries, ConvertHexStringToByteArray(GenerateFlatList("[e-mail]", "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