1 日にそれほど多くのレポートが送信されるとは思わない場合は、gmail アカウントを作成し、それを使用して電子メールを送信し、ユーザーに SMTP サーバーの構成を強制する必要を回避できます。これを行うためのGmailの利用規約が何であるかわかりません。
これは、Gmailアカウントを使用してメールを送信する、私が書いたクラスです...
明らかに、誰かがあなたのGmailアカウントにアクセスできる可能性があるなど、セキュリティ上の問題がいくつかあります. だから、それを考慮してください。
このクラスには、電子メールを同期的または非同期的に送信するためのメソッドがあります。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Collections;
using System.Text;
using System.Net;
using System.Net.Mail;
using System.Net.Mime;
//Mime is Not necerrary if you dont change the msgview and
//if you dont add custom/extra headers
using System.Threading;
using System.IO;
using System.Windows.Forms; // needed for MessageBox only.
namespace BR.Util
{
public class Gmailer
{
SmtpClient client = new SmtpClient();
static String mDefaultToAddress = "yourToAddress@yourdomain.com";
static String mDefaultFromAddress = "anonymous@gmail.com";
static String mDefaultFromDisplayName = "Anonymous";
String mGmailLogin = "someaccount@gmail.com";
String mGmailPassword = "yourpassword";
public Gmailer()
{
client.Credentials = new System.Net.NetworkCredential(mGmailLogin, mGmailPassword);
client.Port = 587;
client.Host = "smtp.gmail.com";
client.EnableSsl = true;
client.SendCompleted += new SendCompletedEventHandler(Gmailer_DefaultAsyncSendCompletedHandler);
}
public void setSendCompletedHandler(SendCompletedEventHandler pHandler)
{
client.SendCompleted -= Gmailer_DefaultAsyncSendCompletedHandler;
client.SendCompleted += pHandler;
}
/// <summary>
/// Static method which sends an email synchronously.
/// It uses a hardcoded from email.
/// </summary>
/// <returns></returns>
public static bool quickSend(String toEmailAddress, String subject, String body)
{
return Gmailer.quickSend(toEmailAddress, mDefaultFromAddress, mDefaultFromDisplayName, subject, body);
}
/// <summary>
/// Static method which sends an email synchronously.
/// It uses the hardcoded email address.
/// </summary>
/// <returns>true if successful, false if an error occurred.</returns>
public static bool quickSend(String toEmailAddress, String fromEmailAddress,
String fromDisplayName, String subject, String body)
{
try
{
Gmailer gmailer = new Gmailer();
System.Net.Mail.MailMessage mailMsg = gmailer.createMailMessage(toEmailAddress, fromEmailAddress, fromDisplayName, subject, body);
gmailer.send(mailMsg);
}
catch (Exception ex)
{
return false;
}
return true;
}
// <summary> creates a MailMessage object initialized with the default values.</summary>
public System.Net.Mail.MailMessage createMailMessage()
{
return createMailMessage(mDefaultToAddress, mDefaultFromAddress, mDefaultFromDisplayName, mDefaultEmailSubject, mDefaultEmailBody);
}
public System.Net.Mail.MailMessage createMailMessage(String toEmailAddress, String fromEmailAddress,
String fromDisplayName, String subject, String body)
{
//Build The MSG
System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();
msg.To.Add(toEmailAddress);
msg.From = new MailAddress(fromEmailAddress, fromDisplayName, System.Text.Encoding.UTF8);
msg.Subject = subject;
msg.SubjectEncoding = System.Text.Encoding.UTF8;
msg.Body = body;
msg.BodyEncoding = System.Text.Encoding.UTF8;
msg.IsBodyHtml = false;
msg.Priority = MailPriority.High;
return msg;
}
public System.Net.Mail.MailMessage addAttachmentToMailMessage(System.Net.Mail.MailMessage msg, String attachmentPath)
{
msg.Attachments.Add(new Attachment(attachmentPath));
return msg;
}
// <summary> method which blocks until the MailMessage has been sent. Throws
// System.Net.Mail.SmtpException if error occurs.</summary>
public void send(System.Net.Mail.MailMessage pMailMessage)
{
//try {
client.Send(pMailMessage);
//}
//catch (System.Net.Mail.SmtpException ex)
//{
// MessageBox.Show(ex.Message, "Send Mail Error");
//}
}
//
public void sendAsync(System.Net.Mail.MailMessage pMailMessage)
{
object userState = pMailMessage;
try
{
MailSent = false;
client.SendAsync(pMailMessage, userState);
}
catch (System.Net.Mail.SmtpException ex)
{
MessageBox.Show(ex.Message, "Send Mail Error");
}
}
// <summary>
// Provides a default SendComplete handler which is activated when an AsyncCompletedEvent
// is triggered by the private client variable. This is useful for debugging etc.
// Use the method setSendCompletedHandler to define your own application specific handler.
// That method also turns this handler off.
// </summary>
public void Gmailer_DefaultAsyncSendCompletedHandler(object sender, AsyncCompletedEventArgs e)
{
MailMessage mail = (MailMessage)e.UserState;
string subject = mail.Subject;
if (e.Cancelled)
{
string cancelled = string.Format("[{0}] Send canceled.", subject);
MessageBox.Show(cancelled);
}
if (e.Error != null)
{
string error = String.Format("[{0}] {1}", subject, e.Error.ToString());
MessageBox.Show(error);
}
else
{
MessageBox.Show("Message sent.");
}
MailSent = true;
}
private bool _MailSent = false;
/// <summary>
/// Set to false when an async send operation is started and is set to true when finished.
/// </summary>
public bool MailSent
{
set
{
_MailSent = value;
}
get
{
return _MailSent;
}
}
}
}