I'm very new to the ASP.NET C# area. I'm planning to send a mail through ASP.NET C# and this is the SMTP address from my ISP:
smtp-proxy.tm.net.my
Below is what I tried to do, but failed.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="SendMail" %>
<html>
<head id="Head1" runat="server"><title>Email Test Page</title></head>
<body>
<form id="form1" runat="server">
Message to: <asp:TextBox ID="txtTo" runat="server" /><br>
Message from: <asp:TextBox ID="txtFrom" runat="server" /><br>
Subject: <asp:TextBox ID="txtSubject" runat="server" /><br>
Message Body:<br>
<asp:TextBox ID="txtBody" runat="server" Height="171px" TextMode="MultiLine" Width="270px" /><br>
<asp:Button ID="Btn_SendMail" runat="server" onclick="Btn_SendMail_Click" Text="Send Email" /><br>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</form>
</body>
</html>
And below is my code-behind:
using System;
using System.Web.UI.WebControls;
using System.Net.Mail;
public partial class SendMail : System.Web.UI.Page
{
protected void Btn_SendMail_Click(object sender, EventArgs e)
{
MailMessage mailObj = new MailMessage(
txtFrom.Text, txtTo.Text, txtSubject.Text, txtBody.Text);
SmtpClient SMTPServer = new SmtpClient("127.0.0.1");
try
{
SMTPServer.Send(mailObj);
}
catch (Exception ex)
{
Label1.Text = ex.ToString();
}
}
}
PS: I'm sorry that I couldn't understand the receiver/sender SMTP concept, and so I am trying to understand the whole concept from here.
You can try this using hotmail like this:-
MailMessage o = new MailMessage("From", "To","Subject", "Body");
NetworkCredential netCred= new NetworkCredential("Sender Email","Sender Password");
SmtpClient smtpobj= new SmtpClient("smtp.live.com", 587);
smtpobj.EnableSsl = true;
smtpobj.Credentials = netCred;
smtpobj.Send(o);
Try using this code instead. Note: In the "from address" give your correct email id and password.
protected void btn_send_Click(object sender, EventArgs e)
{
System.Net.Mail.MailMessage mail = new System.Net.Mail.MailMessage();
mail.To.Add("to gmail address");
mail.From = new MailAddress("from gmail address", "Email head", System.Text.Encoding.UTF8);
mail.Subject = "This mail is send from asp.net application";
mail.SubjectEncoding = System.Text.Encoding.UTF8;
mail.Body = "This is Email Body Text";
mail.BodyEncoding = System.Text.Encoding.UTF8;
mail.IsBodyHtml = true;
mail.Priority = MailPriority.High;
SmtpClient client = new SmtpClient();
client.Credentials = new System.Net.NetworkCredential("from gmail address", "your gmail account password");
client.Port = 587;
client.Host = "smtp.gmail.com";
client.EnableSsl = true;
try
{
client.Send(mail);
Page.RegisterStartupScript("UserMsg", "<script>alert('Successfully Send...');if(alert){ window.location='SendMail.aspx';}</script>");
}
catch (Exception ex)
{
Exception ex2 = ex;
string errorMessage = string.Empty;
while (ex2 != null)
{
errorMessage += ex2.ToString();
ex2 = ex2.InnerException;
}
Page.RegisterStartupScript("UserMsg", "<script>alert('Sending Failed...');if(alert){ window.location='SendMail.aspx';}</script>");
}
}
MailMessage mm = new MailMessage(txtEmail.Text, txtTo.Text);
mm.Subject = txtSubject.Text;
mm.Body = txtBody.Text;
if (fuAttachment.HasFile)//file upload select or not
{
string FileName = Path.GetFileName(fuAttachment.PostedFile.FileName);
mm.Attachments.Add(new Attachment(fuAttachment.PostedFile.InputStream, FileName));
}
mm.IsBodyHtml = false;
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.gmail.com";
smtp.EnableSsl = true;
NetworkCredential NetworkCred = new NetworkCredential(txtEmail.Text, txtPassword.Text);
smtp.UseDefaultCredentials = true;
smtp.Credentials = NetworkCred;
smtp.Port = 587;
smtp.Send(mm);
Response.write("Send Mail");
View Video: https://www.youtube.com/watch?v=bUUNv-19QAI
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Globalization;
using System.Text.RegularExpressions;
/// <summary>
/// Summary description for RegexUtilities
/// </summary>
public class RegexUtilities
{
bool InValid = false;
public bool IsValidEmail(string strIn)
{
InValid = false;
if (String.IsNullOrEmpty(strIn))
return false;
// Use IdnMapping class to convert Unicode domain names.
strIn = Regex.Replace(strIn, @"(@)(.+)$", this.DomainMapper);
if (InValid)
return false;
// Return true if strIn is in valid e-mail format.
return Regex.IsMatch(strIn, @"^(?("")(""[^""]+?""@)|(([0-9a-z]((\.(?!\.))|[-!#\$%&'\*\+/=\?\^`\{\}\|~\w])*)(?<=[0-9a-z])@))" + @"(?(\[)(\[(\d{1,3}\.){3}\d{1,3}\])|(([0-9a-z][-\w]*[0-9a-z]*\.)+[a-z0-9]{2,17}))$",
RegexOptions.IgnoreCase);
}
private string DomainMapper(Match match)
{
// IdnMapping class with default property values.
IdnMapping idn = new IdnMapping();
string domainName = match.Groups[2].Value;
try
{
domainName = idn.GetAscii(domainName);
}
catch (ArgumentException)
{
InValid = true;
}
return match.Groups[1].Value + domainName;
}
}
private void GetSendEmInfo()
{
#region For Get All Type Email Informations..!!
IPL.DoId = ddlName.SelectedValue;
DataTable dt = IdBL.GetEmailS(IPL);
if (dt.Rows.Count > 0)
{
hid_MailId.Value = dt.Rows[0]["MailId"].ToString();
hid_UsedPName.Value = dt.Rows[0]["UName"].ToString();
hid_EmailSubject.Value = dt.Rows[0]["EmailSubject"].ToString();
hid_EmailBody.Value = dt.Rows[0]["EmailBody"].ToString();
hid_EmailIdName.Value = dt.Rows[0]["EmailIdName"].ToString();
hid_EmPass.Value = dt.Rows[0]["EPass"].ToString();
hid_SeName.Value = dt.Rows[0]["SenName"].ToString();
hid_TNo.Value = dt.Rows[0]["TeNo"].ToString();
hid_EmaLimit.Value = dt.Rows[0]["EmailLimit"].ToString();
hidlink.Value = dt.Rows[0][link"].ToString();
}
#endregion
#region For Set Some Local Variables..!!
int StartLmt, FinalLmt, SendCurrentMail;
StartLmt = FinalLmt = SendCurrentMail = 0;
bool Valid_LimitMail;
Valid_LimitMail = true;
/**For Get Finalize Limit For Send Mail**/
FinalLmt = Convert.ToInt32(hid_EmailmaxLimit.Value);
#region For Check Email Valid Limits..!!
if (FinalLmt > 0)
{
Valid_LimitMail = true;
}
else
{
Valid_LimitMail = false;
}
#endregion
/**For Get Finalize Limit For Send Mail**/
#endregion
if (Valid_LimitMail == true)
{
#region For Send Current Email Status..!!
bool EmaiValid;
string CreateFileName;
string retmailflg = null;
EmaiValid = false;
#endregion
#region For Set Start Limit And FinalLimit Send No Of Email..!!
mPL.SendDate = DateTime.Now.ToString("dd-MMM-yyyy");
DataTable dtsendEmail = m1BL.GetEmailSendLog(mPL);
if (dtsendEmail.Rows.Count > 0)
{
StartLmt = Convert.ToInt32(dtsendEmail.Rows[0]["SendNo_Of_Email"].ToString());
}
else
{
StartLmt = 0;
}
#endregion
#region For Find Grid View Controls..!!
for (int i = 0; i < GrdEm.Rows.Count; i++)
{
#region For Find Grid view Controls..!!
CheckBox Chk_SelectOne = (CheckBox)GrdEmp.Rows[i].FindControl("chkSingle");
Label lbl_No = (Label)GrdEmAtt.Rows[i].FindControl("lblGrdCode");
lblCode.Value = lbl_InNo.Text;
Label lbl_EmailId = (Label)GrdEomAtt.Rows[i].FindControl("lblGrdEmpEmail");
#endregion
/**Region For If Check Box Checked Then**/
if (Chk_SelectOne.Checked == true)
{
if (!string.IsNullOrEmpty(lbl_EmailId.Text))
{
#region For When Check Box Checked..!!
/**If Start Limit Less Or Equal To Then Condition Performs**/
if (StartLmt < FinalLmt)
{
StartLmt = StartLmt + 1;
}
else
{
Valid_LimitMail = false;
EmaiValid = false;
}
/**End Region**/
string[] SplitClients_Email = lbl_EmailId.Text.Split(',');
string Send_Email, Hold_Email;
Send_Email = Hold_Email = "";
int CountEmail;/**Region For Count Total Email**/
CountEmail = 0;/**First Time Email Counts Zero**/
Hold_Email = SplitClients_Email[0].ToString().Trim().TrimEnd().TrimStart().ToString();
/**Region For If Clients Have One Email**/
#region For First Emails Send On Client..!!
if (SplitClients_Email[0].ToString() != "")
{
if (EmailRegex.IsValidEmail(Hold_Email))
{
Send_Email = Hold_Email;
CountEmail = 1;
EmaiValid = true;
}
else
{
EmaiValid = false;
}
}
#endregion
/**Region For If Clients Have One Email**/
/**Region For If Clients Have Two Email**/
/**Region For If Clients Have Two Email**/
if (EmaiValid == true)
{
#region For Create Email Body And Create File Name..!!
//fofile = Server.MapPath("PDFs");
fofile = Server.MapPath("~/vvv/vvvv/") + "/";
CreateFileName = lbl_INo.Text.ToString() + "_1" + ".Pdf";/**Create File Name**/
string[] orimail = Send_Email.Split(',');
string Billbody, TempInvoiceId;
// DateTime dtLstdate = new DateTime(Convert.ToInt32(txtYear.Text), Convert.ToInt32(ddlMonth.SelectedValue), 16);
// DateTime IndtLmt = dtLstdate.AddMonths(1);
TempInvoiceId = "";
//byte[] Buffer = Encrypt.Encryptiondata(lbl_InvoiceNo.Text.ToString());
//TempInvoiceId = Convert.ToBase64String(Buffer);
#region Create Encrypted Path
byte[] EncCode = Encrypt.Encryptiondata(lbl_INo.Text);
hidEncrypteCode.Value = Convert.ToBase64String(EncECode);
#endregion
//#region Create Email Body !!
//body = hid_EmailBody.Value.Replace("@greeting", lbl_CoName.Text).Replace("@free", hid_ToNo.Value).Replace("@llnk", "<a style='font-family: Tahoma; font-size: 10pt; color: #800000; font-weight: bold' href='http://1ccccc/ccc/ccc/ccc.aspx?EC=" + hidEncryptedCode.Value+ "' > C cccccccc </a>");
body = hid_EmailBody.Value.Replace("@greeting", "Hii").Replace("@No", hid_No.Value);/*For Mail*/
//#endregion
#region For Email Sender Informations..!!
for (int j = 0; j < CountEmail; j++)
{
//if (File.Exists(fofile + "\\" + CreateFileName))
//{
#region
lbl_EmailId.Text = orimail[j];
retmailflg = "";
/**Region For Send Email For Clients**/
//retmailflg = SendPreMail("Wp From " + lbl_CName.Text + "", body, lbl_EmailId.Text, lbl_IeNo.Text, hid_EmailIdName.Value, hid_EmailPassword.Value);
retmailflg = SendPreMail(hid_EmailSubject.Value, Body, lbl_EmailId.Text, lbl_No.Text, hid_EmailIdName.Value, hid_EmailPassword.Value);
/**End Region**/
/**Region For Create Send Email Log When Email Send Successfully**/
if (retmailflg == "True")
{
SendCurrentMail = Convert.ToInt32(SendCurrentMail) + 1;
StartLmt = Convert.ToInt32(StartLmt) + 1;
if (SendCurrentMail > 0)
{
CreateEmailLog(lbl_InNo.Text, StartLmt, hid_EmailIdName.Value, lbl_EmailId.Text);
}
}
/**End Region**/
#endregion
//}
}
#endregion
}
#endregion
}
}
/**End Region**/
}
#endregion
}
}
private void CreateEmailLog(string UniqueId, int StartLmt, string FromEmailId, string TotxtEmailId)
{
FPL.EmailId_From = FromEmailId;
FPL.To_EmailId = TotxtEmailId;
FPL.SendDate = DateTime.Now.ToString("dd-MMM-yyyy");
FPL.EmailUniqueId = UniqueId;
FPL.SendNo_Of_Email = StartLmt.ToString();
FPL.LoginUserId = Session["LoginUserId"].ToString();
int i = FBL.InsertEmaDoc(FPL);
}
public string SendPreMail(string emsub, string embody, string EmailId, string FileId, string EmailFromId, string Password)
{
string retval = "False";
try
{
string emailBody, emailSubject, emailToList, emailFrom,
accountPassword, smtpServer;
bool enableSSL;
int port;
emailBody = embody;
emailSubject = emsub;
emailToList = EmailId;
emailFrom = EmailFromId;
accountPassword = Password;
smtpServer = "smtp.gmail.com";
enableSSL = true;
port = 587;
string crefilename;
string fofile;
fofile = Server.MapPath("PDF");
crefilename = FileId + ".Pdf";
string[] att = { crefilename };
string retemail, insertqry;
retemail = "";
retemail = SendEmail(emailBody, emailSubject, emailFrom, emailToList, att, smtpServer, enableSSL, accountPassword, port);
if (retemail == "True")
{
retval = retemail;
}
}
catch
{
retval = "False";
}
finally
{
}
return retval;
}
public string SendEmail(string emailBody, string emailSubject, string emailFrom, string emailToList, string[] attachedFiles, string smtpIPAddress, bool enableSSL, string accountPassword, int port)
{
MailMessage mail = new MailMessage();
string retflg;
retflg = "False";
try
{
mail.From = new MailAddress(emailFrom);
if (emailToList.Contains(";"))
{
emailToList = emailToList.Replace(";", ",");
}
mail.To.Add(emailToList);
mail.Subject = emailSubject;
mail.IsBodyHtml = true;
mail.Body = emailBody;
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.gmail.com";
smtp.EnableSsl = true;
NetworkCredential NetworkCred = new NetworkCredential(emailFrom, accountPassword);
smtp.UseDefaultCredentials = true;
smtp.Credentials = NetworkCred;
smtp.Port = 587;
smtp.Send(mail);
retflg = "True";
}
catch
{
retflg = "False";
}
finally
{
mail.Dispose();
}
return retflg;
}
You can try MailKit MailKit is an Open Source cross-platform .NET mail-client library that is based on MimeKit and optimized for mobile devices. You can use easily in your application.You can download from here.
MimeMessage mailMessage = new MimeMessage();
mailMessage.From.Add(new MailboxAddress(fromName, [email protected]));
mailMessage.Sender = new MailboxAddress(senderName, [email protected]);
mailMessage.To.Add(new MailboxAddress(emailid, emailid));
mailMessage.Subject = subject;
mailMessage.ReplyTo.Add(new MailboxAddress(replyToAddress));
mailMessage.Subject = subject;
var builder = new BodyBuilder();
builder.TextBody = "Hello There";
try
{
using (var smtpClient = new SmtpClient())
{
smtpClient.Connect("HostName", "Port", MailKit.Security.SecureSocketOptions.None);
smtpClient.Authenticate("[email protected]", "password");
smtpClient.Send(mailMessage);
Console.WriteLine("Success");
}
}
catch (SmtpCommandException ex)
{
Console.WriteLine(ex.ToString());
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
Just pass parameter
like
body - The content(query) from the customer
subject - subject that defined in mail subject
username - nothing name anything
mail - mail (required)
public static bool SendMail(String body, String subject, string username, String mail)
{
bool isSendSuccess = false;
try
{
var fromEmailAddress = ConfigurationManager.AppSettings["FromEmailAddress"].ToString();
var fromEmailDisplayName = ConfigurationManager.AppSettings["FromEmailDisplayName"].ToString();
var fromEmailPassword = ConfigurationManager.AppSettings["FromEmailPassword"].ToString();
var smtpHost = ConfigurationManager.AppSettings["SMTPHost"].ToString();
var smtpPort = ConfigurationManager.AppSettings["SMTPPort"].ToString();
MailMessage message = new MailMessage(new MailAddress(fromEmailAddress, fromEmailDisplayName),
new MailAddress(mail, username));
message.Subject = subject;
message.IsBodyHtml = true;
message.Body = body;
var client = new SmtpClient();
client.UseDefaultCredentials = false;
client.Credentials = new NetworkCredential(fromEmailAddress, fromEmailPassword);
client.Host = smtpHost;
client.EnableSsl = false;
client.Port = !string.IsNullOrEmpty(smtpPort) ? Convert.ToInt32(smtpPort) : 0;
client.Send(message);
isSendSuccess = true;
}
catch (Exception ex)
{
throw (new Exception("Mail send failed to loginId " + mail + ", though registration done."+ex.ToString()+"\n"+ex.StackTrace));
}
return isSendSuccess;
}
if your using go daddy server this work . add this in web.config
<appSettings>
---other ---setting
<add key="FromEmailAddress" value="[email protected]" />
<add key="FromEmailDisplayName" value="anyname" />
<add key="FromEmailPassword" value="mypassword@" />
<add key="SMTPHost" value="relay-hosting.secureserver.net" />
<add key="SMTPPort" value="25" />
</appSettings>
if you are using localhost or vps server change this configuration to this
<appSettings>
---other ---setting
<add key="FromEmailAddress" value="[email protected]" />
<add key="FromEmailDisplayName" value="anyname" />
<add key="FromEmailPassword" value="mypassword@" />
<add key="SMTPHost" value="smtp.gmail.com" />
<add key="SMTPPort" value="587" />
</appSettings>
change the code
client.EnableSsl = true;
if your are using gmail please enable secure app. using this link https://myaccount.google.com/lesssecureapps?pli=1&rapt=AEjHL4Pd6h3XxE663Flvd-FfeRXxW_eNrIsGTBlZklgkAHZEeuHvheCQuZ1-djB9uIWaB-2EV7hyLCU0dWKA7D0JzYKe4ZRkuA
Check this out .... it works
http://www.aspnettutorials.com/tutorials/email/email-aspnet2-csharp/
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Net.Mail;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnSubmit_Click(object sender, EventArgs e)
{
try
{
MailMessage message = new MailMessage(txtFrom.Text, txtTo.Text, txtSubject.Text, txtBody.Text);
SmtpClient emailClient = new SmtpClient(txtSMTPServer.Text);
emailClient.Send(message);
litStatus.Text = "Message Sent";
}
catch (Exception ex)
{
litStatus.Text=ex.ToString();
}
}
}
If you want to generate your email bodies in razor, you can use Mailzory. Also, you can download the nuget package from here.
// template path
var viewPath = Path.Combine("Views/Emails", "hello.cshtml");
// read the content of template and pass it to the Email constructor
var template = File.ReadAllText(viewPath);
var email = new Email(template);
// set ViewBag properties
email.ViewBag.Name = "Johnny";
email.ViewBag.Content = "Mailzory Is Funny";
// send email
var task = email.SendAsync("[email protected]", "subject");
task.Wait()
This is the easiest script to test.
<%@ Import Namespace="System.Net" %>
<%@ Import Namespace="System.Net.Mail" %>
<script language="C#" runat="server">
protected void Page_Load(object sender, EventArgs e)
{
//create the mail message
MailMessage mail = new MailMessage();
//set the addresses
mail.From = new MailAddress("From email account");
mail.To.Add("To email account");
//set the content
mail.Subject = "This is a test email from C# script";
mail.Body = "This is a test email from C# script";
//send the message
SmtpClient smtp = new SmtpClient("mail.domainname.com");
NetworkCredential Credentials = new NetworkCredential("to email account", "Password");
smtp.Credentials = Credentials;
smtp.Send(mail);
lblMessage.Text = "Mail Sent";
}
</script>
<html>
<body>
<form runat="server">
<asp:Label id="lblMessage" runat="server"></asp:Label>
</form>
</body>
According to this :
SmtpClient and its network of types are poorly designed, we strongly recommend you use https://github.com/jstedfast/MailKit and https://github.com/jstedfast/MimeKit instead.
Reference : https://docs.microsoft.com/en-us/dotnet/api/system.net.mail.smtpclient?view=netframework-4.8
It's better to use MailKit to send emails :
var message = new MimeMessage ();
message.From.Add (new MailboxAddress ("Joey Tribbiani", "[email protected]"));
message.To.Add (new MailboxAddress ("Mrs. Chanandler Bong", "[email protected]"));
message.Subject = "How you doin'?";
message.Body = new TextPart ("plain") {
Text = @"Hey Chandler,
I just wanted to let you know that Monica and I were going to go play some paintball, you in?
-- Joey"
};
using (var client = new SmtpClient ()) {
// For demo-purposes, accept all SSL certificates (in case the server supports STARTTLS)
client.ServerCertificateValidationCallback = (s,c,h,e) => true;
client.Connect ("smtp.friends.com", 587, false);
// Note: only needed if the SMTP server requires authentication
client.Authenticate ("joey", "password");
client.Send (message);
client.Disconnect (true);
}
Try the following :
try
{
var fromEmailAddress = ConfigurationManager.AppSettings["FromEmailAddress"].ToString();
var fromEmailDisplayName = ConfigurationManager.AppSettings["FromEmailDisplayName"].ToString();
var fromEmailPassword = ConfigurationManager.AppSettings["FromEmailPassword"].ToString();
var smtpHost = ConfigurationManager.AppSettings["SMTPHost"].ToString();
var smtpPort = ConfigurationManager.AppSettings["SMTPPort"].ToString();
string body = "Your registration has been done successfully. Thank you.";
MailMessage message = new MailMessage(new MailAddress(fromEmailAddress, fromEmailDisplayName), new MailAddress(ud.LoginId, ud.FullName));
message.Subject = "Thank You For Your Registration";
message.IsBodyHtml = true;
message.Body = body;
var client = new SmtpClient();
client.Credentials = new NetworkCredential(fromEmailAddress, fromEmailPassword);
client.Host = smtpHost;
client.EnableSsl = true;
client.Port = !string.IsNullOrEmpty(smtpPort) ? Convert.ToInt32(smtpPort) : 0;
client.Send(message);
}
catch (Exception ex)
{
throw (new Exception("Mail send failed to loginId " + ud.LoginId + ", though registration done."));
}
And then in you web.config add the following in between
<!--Email Config-->
<add key="FromEmailAddress" value="sender emailaddress"/>
<add key="FromEmailDisplayName" value="Display Name"/>
<add key="FromEmailPassword" value="sender Password"/>
<add key="SMTPHost" value="smtp-proxy.tm.net.my"/>
<add key="SMTPPort" value="smptp Port"/>
Source: Stackoverflow.com