Mailkit:我可以从转发的电子邮件中获得原始发件人吗？

using MailKit;
using MailKit.Net.Imap;
using MailKit.Search;
using MimeKit;

public class EmailClient
{
    public void GetOriginalSender()
    {
        using (var client = new ImapClient())
        {
            client.Connect("imap.example.com", 993, true);
            client.Authenticate("username", "password");

            client.Inbox.Open(FolderAccess.ReadOnly);

            var query = SearchQuery.All;
            var uids = client.Inbox.Search(query);

            foreach (var uid in uids)
            {
                var message = client.Inbox.GetMessage(uid);
                var from = message.From;

                // 获取原始发件人
                var originalSender = from.FirstOrDefault();

                // 打印原始发件人的名称和地址
                Console.WriteLine("Original Sender: {0} <{1}>", originalSender.Name, originalSender.Address);
            }

            client.Disconnect(true);
        }
    }
}