I have solved it by myself and have changed a bit in above referred link code to use with Powershell:
function LoadExtendedHexStrClass(){
$MyCode = @"
using System;
using System.Globalization;
using System.Text;
namespace ExtProp
{
public class BinaryConfig
{
public static String GenerateFlatList(String SMTPAddress, String DisplayName, String ProviderName)
{
String abCount = "01000000";
String AddressId = GenerateOneOff(SMTPAddress, DisplayName,ProviderName);
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 ProviderName)
{
String Flags = "00000000";
String ProviderNameHex = BitConverter.ToString(UnicodeEncoding.Unicode.GetBytes(ProviderName)).Replace("-", "");
String ProviderUid = ProviderNameHex;
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;
}
public 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;
}
}
"@
Add-Type -TypeDefinition $MyCode -Language CSharp
}
and used it as below:
$eMail = New-Object -TypeName Microsoft.Exchange.WebServices.Data.EmailMessage -ArgumentList $exchService
if($ReplyTo -ne ""){
LoadExtendedHexStrClass
$UserProperties=Get-kUserProfileProperties $ReplyTo
$DisplayName =$UserProperties.PreferredName
$FlatList= [ExtProp.BinaryConfig]::GenerateFlatList($ReplyTo,$DisplayName, $CurrentUserEmail);
$PidTagReplyRecipientEntries = new-object Microsoft.Exchange.WebServices.Data.ExtendedPropertyDefinition(0x004F,[Microsoft.Exchange.WebServices.Data.MapiPropertyType]::Binary);
$PidTagReplyRecipientNames = new-object Microsoft.Exchange.WebServices.Data.ExtendedPropertyDefinition(0x0050,[Microsoft.Exchange.WebServices.Data.MapiPropertyType]::String);
$eMail.SetExtendedProperty($PidTagReplyRecipientEntries,[ExtProp.BinaryConfig]::ConvertHexStringToByteArray($FlatList));
$eMail.SetExtendedProperty($PidTagReplyRecipientNames,$DisplayName);
}
$eMail.SendAndSaveCopy()
Here $ReplyTo is email address of user where I want to send Reply Email.