我正在使用 Exchange Server 通过 SmtpClient 发送 MailMessages（已成功发送），但希望将我发送的电子邮件转到我发送邮件的电子邮件地址的“已发送文件夹”（未发生）。
using (var mailMessage = new MailMessage("[email protected]", "[email protected]", "subject", "body"))
{
var smtpClient = new SmtpClient("SmtpHost")
{
EnableSsl = false,
DeliveryMethod = SmtpDeliveryMethod.Network
};
// Apply credentials
smtpClient.Credentials = new NetworkCredential("smtpUsername", "smtpPassword");
// Send
smtpClient.Send(mailMessage);
}
我是否缺少一项配置来确保我从“[电子邮件受保护]”发送的所有电子邮件都到达其“已发送文件夹”？
我已经做到了这一点，因此为了完整起见，这里介绍如何正确执行此操作。使用托管 Exchange Web 服务 ( http://msdn.microsoft.com/en-us/library/dd633709%28EXCHG.80%29.aspx )：
ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2007_SP1);
// In case you have a dodgy SSL certificate:
System.Net.ServicePointManager.ServerCertificateValidationCallback =
delegate(Object obj, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
{
return true;
};
service.Credentials = new WebCredentials("username", "password", "MYDOMAIN");
service.Url = new Uri("https://exchangebox/EWS/Exchange.asmx");
EmailMessage em = new EmailMessage(service);
em.Subject = "example email";
em.Body = new MessageBody("hello world");
em.Sender = new Microsoft.Exchange.WebServices.Data.EmailAddress("[email protected]");
em.ToRecipients.Add(new Microsoft.Exchange.WebServices.Data.EmailAddress("[email protected]"));
// Send the email and put it into the SentItems:
em.SendAndSaveCopy(WellKnownFolderName.SentItems);
我猜测您的要求主要是让用户了解已发送的电子邮件。已发送邮件文件夹是允许这种情况发生的一种方法。过去，我通过添加一个
BCC Address尝试使用某种 Outlook 规则将项目移动到标记为已读的已发送项目文件夹...
using (var mailMessage = new MailMessage(
"[email protected]",
"[email protected]",
"",
"[email protected]",
"subject",
"body"))
{
var smtpClient = new SmtpClient("SmtpHost")
{
EnableSsl = false,
DeliveryMethod = SmtpDeliveryMethod.Network
};
// Apply credentials
smtpClient.Credentials = new NetworkCredential("smtpUsername", "smtpPassword");
// Send
smtpClient.Send(mailMessage);
}
我一直在寻找这个问题的答案，但不依赖 Exchange 服务器，而是使用 IMAP 服务器。我不知道这是否超出了问题的范围，但我发现它正在搜索“将已发送的邮件消息放入已发送文件夹”，这首先是我的问题。
在我构建自己的解决方案的基础上，还没有找到直接答案：
.Send()
，而不是
.SendAndSaveMessageToIMAP()。
public static class SmtpClientExtensions
{
static System.IO.StreamWriter sw = null;
static System.Net.Sockets.TcpClient tcpc = null;
static System.Net.Security.SslStream ssl = null;
static string path;
static int bytes = -1;
static byte[] buffer;
static System.Text.StringBuilder sb = new System.Text.StringBuilder();
static byte[] dummy;
/// <summary>
/// Communication with server
/// </summary>
/// <param name="command">The command beeing sent</param>
private static void SendCommandAndReceiveResponse(string command)
{
try
{
if (command != "")
{
if (tcpc.Connected)
{
dummy = System.Text.Encoding.ASCII.GetBytes(command);
ssl.Write(dummy, 0, dummy.Length);
}
else
{
throw new System.ApplicationException("TCP CONNECTION DISCONNECTED");
}
}
ssl.Flush();
buffer = new byte[2048];
bytes = ssl.Read(buffer, 0, 2048);
sb.Append(System.Text.Encoding.ASCII.GetString(buffer));
sw.WriteLine(sb.ToString());
sb = new System.Text.StringBuilder();
}
catch (System.Exception ex)
{
throw new System.ApplicationException(ex.Message);
}
}
/// <summary>
/// Saving a mail message before beeing sent by the SMTP client
/// </summary>
/// <param name="self">The caller</param>
/// <param name="imapServer">The address of the IMAP server</param>
/// <param name="imapPort">The port of the IMAP server</param>
/// <param name="userName">The username to log on to the IMAP server</param>
/// <param name="password">The password to log on to the IMAP server</param>
/// <param name="sentFolderName">The name of the folder where the message will be saved</param>
/// <param name="mailMessage">The message being saved</param>
public static void SendAndSaveMessageToIMAP(this System.Net.Mail.SmtpClient self, System.Net.Mail.MailMessage mailMessage, string imapServer, int imapPort, string userName, string password, string sentFolderName)
{
try
{
path = System.Environment.CurrentDirectory + "\\emailresponse.txt";
if (System.IO.File.Exists(path))
System.IO.File.Delete(path);
sw = new System.IO.StreamWriter(System.IO.File.Create(path));
tcpc = new System.Net.Sockets.TcpClient(imapServer, imapPort);
ssl = new System.Net.Security.SslStream(tcpc.GetStream());
ssl.AuthenticateAsClient(imapServer);
SendCommandAndReceiveResponse("");
SendCommandAndReceiveResponse(string.Format("$ LOGIN {1} {2} {0}", System.Environment.NewLine, userName, password));
using (var m = mailMessage.RawMessage())
{
m.Position = 0;
var sr = new System.IO.StreamReader(m);
var myStr = sr.ReadToEnd();
SendCommandAndReceiveResponse(string.Format("$ APPEND {1} (\\Seen) {{{2}}}{0}", System.Environment.NewLine, sentFolderName, myStr.Length));
SendCommandAndReceiveResponse(string.Format("{1}{0}", System.Environment.NewLine, myStr));
}
SendCommandAndReceiveResponse(string.Format("$ LOGOUT{0}", System.Environment.NewLine));
}
catch (System.Exception ex)
{
System.Diagnostics.Debug.WriteLine("error: " + ex.Message);
}
finally
{
if (sw != null)
{
sw.Close();
sw.Dispose();
}
if (ssl != null)
{
ssl.Close();
ssl.Dispose();
}
if (tcpc != null)
{
tcpc.Close();
}
}
self.Send(mailMessage);
}
}
public static class MailMessageExtensions
{
private static readonly System.Reflection.BindingFlags Flags = System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic;
private static readonly System.Type MailWriter = typeof(System.Net.Mail.SmtpClient).Assembly.GetType("System.Net.Mail.MailWriter");
private static readonly System.Reflection.ConstructorInfo MailWriterConstructor = MailWriter.GetConstructor(Flags, null, new[] { typeof(System.IO.Stream) }, null);
private static readonly System.Reflection.MethodInfo CloseMethod = MailWriter.GetMethod("Close", Flags);
private static readonly System.Reflection.MethodInfo SendMethod = typeof(System.Net.Mail.MailMessage).GetMethod("Send", Flags);
/// <summary>
/// A little hack to determine the number of parameters that we
/// need to pass to the SaveMethod.
/// </summary>
private static readonly bool IsRunningInDotNetFourPointFive = SendMethod.GetParameters().Length == 3;
/// <summary>
/// The raw contents of this MailMessage as a MemoryStream.
/// </summary>
/// <param name="self">The caller.</param>
/// <returns>A MemoryStream with the raw contents of this MailMessage.</returns>
public static System.IO.MemoryStream RawMessage(this System.Net.Mail.MailMessage self)
{
var result = new System.IO.MemoryStream();
var mailWriter = MailWriterConstructor.Invoke(new object[] { result });
SendMethod.Invoke(self, Flags, null, IsRunningInDotNetFourPointFive ? new[] { mailWriter, true, true } : new[] { mailWriter, true }, null);
result = new System.IO.MemoryStream(result.ToArray());
CloseMethod.Invoke(mailWriter, Flags, null, new object[] { }, null);
return result;
}
}
所以罗伯特·里德的例子将变成
using (var mailMessage = new MailMessage("[email protected]", "[email protected]", "subject", "body"))
{
//Add an attachment just for the sake of it
Attachment doc = new Attachment(@"filePath");
doc.ContentId = "doc";
mailMessage.Attachments.Add(doc);
var smtpClient = new SmtpClient("SmtpHost")
{
EnableSsl = false,
DeliveryMethod = SmtpDeliveryMethod.Network
};
// Apply credentials
smtpClient.Credentials = new NetworkCredential("smtpUsername", "smtpPassword");
// Send
smtpClient.SendAndSaveMessageToIMAP(mailMessage, "imap.mail.com", 993, "imapUsername", "imapPassword", "SENT");
}
您可以使用 Outlook Automation API 要求 Outlook 创建电子邮件并发送。
MailKit 时遇到了与 SMTP 服务器相同的问题，
发送前需要保存邮件：
private static async Task SaveMessageAsync(MimeMessage message, CancellationToken cancellationToken)
{
using var client = new ImapClient();
await client.ConnectAsync("host-address-of-server", 143, SecureSocketOptions.Auto, cancellationToken);
await client.AuthenticateAsync("[email protected]", "somePassword", cancellationToken);
var sentFolder = client.GetFolder(SpecialFolder.Sent);
if (sentFolder == null)
{
var personalFolder = client.GetFolder(client.PersonalNamespaces[0]);
sentFolder = await personalFolder.GetSubfolderAsync(nameof(SpecialFolder.Sent), cancellationToken);
}
await sentFolder.OpenAsync(FolderAccess.ReadWrite, cancellationToken);
await sentFolder.AppendAsync(message, MessageFlags.Seen, cancellationToken);
await client.DisconnectAsync(true, cancellationToken);
}
使用它类似：
private async Task SendMessageAsync(MimeMessage message, CancellationToken cancellationToken)
{
await SaveMessageAsync(message, cancellationToken);
using var client = new SmtpClient();
await client.ConnectAsync("host-address-of-server", 25, SecureSocketOptions.Auto, cancellationToken);
await client.AuthenticateAsync("[email protected]", "somePassword", cancellationToken);
await client.SendAsync(message, cancellationToken);
await client.DisconnectAsync(true, cancellationToken);
}
附注我使用了答案中代码中的一些代码：