Email to multiple receipent

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UntitledSend email to multiple receipent in asp.net

 Introduction

In this post I will explain how to Send email to multiple recipient in Asp.net. My previous post Difference between union and union all in sql server,How to send email in Asp.net c#

Explanation

In my previous posts I have given about Email id validation using javascript in Asp.net, Sending email using Asp.net is simple thing but I cannot forget my first task.Because am a fresher without knowing about dotnet I started my carrer, the first task is email sending using asp.net I have searched in google for more than 15 days and finally found the solution.Ok let me come to the point, here am trying to explain how to send the same email details to multiple receipents, One way this code will helpful for monthly news letters sending and checking.Also we may easily check the email configuration setting through this.First we may design the screen as mentioned below.

Design

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<table cellpadding=”2″ cellspacing=”2″ border=”2″ align=”center” width=”500px”>
<tr>
<td colspan=”2″><asp:Label ID=”lblMessage” runat=”server” ForeColor=”Red”></asp:Label></td>
</tr>
<tr>
<td>SMTP(HOST) :</td>
<td><asp:TextBox ID=”txtsmtp” runat=”server” Width=”268px”></asp:TextBox></td>
</tr>
<tr>
<td>UserName eMailID :</td>
<td><asp:TextBox ID=”txtFromUID” runat=”server” Width=”270px”></asp:TextBox></td>
</tr>
<tr>
<td>Password :</td>
<td><asp:TextBox ID=”txtPwd” runat=”server” Width=”133px” TextMode=”Password”></asp:TextBox></td>
</tr>
<tr>
<td>Port :</td>
<td><asp:TextBox ID=”txtPort” runat=”server” Width=”270px”></asp:TextBox></td>
</tr>
<tr>
<td>Enable SSL :</td>
<td><asp:CheckBox ID=”chkSSL” runat=”server” /> </td>
</tr>
<tr>
<td>FromID :</td>
<td><asp:TextBox ID=”txtFromID” runat=”server” Width=”270px”></asp:TextBox></td>
</tr>
<tr>
<td>To :</td>
<td><asp:TextBox ID=”txtTo” runat=”server” Width=”272px” Height=”60px”
TextMode=”MultiLine”></asp:TextBox><br />(use comma for multiple mailid)</td>
</tr>
<tr>
<td>Subject :</td>
<td><asp:TextBox ID=”txtSubject” runat=”server” Width=”267px”></asp:TextBox></td>
</tr>
<tr>
<td>Body :</td>
<td><asp:TextBox ID=”txtBody” runat=”server” Width=”279px” Height=”52px”
TextMode=”MultiLine”></asp:TextBox></td>
</tr>

<tr align=”center”>
<td colspan=”2″><asp:Button ID=”btnSubmit” runat=”server” Text=”Send”
onclick=”btnSubmit_Click” />&nbsp;<asp:Button ID=”btnClear” runat=”server” Text=”Clear”
onclick=”btnClear_Click” /></td>
</tr>
</table>

Coding

using System.Net.Mail;

public void Clear()
{
txtTo.Text = “”;
txtSubject.Text = “”;
txtsmtp.Text = “”;
txtPwd.Text = “”;
txtPort.Text = “”;
txtFromID.Text = “”;
txtBody.Text = “”;
}

protected void btnClear_Click(object sender, EventArgs e)
{
Clear();

}

protected void btnSubmit_Click(object sender, EventArgs e)
{
lblMessage.Text = string.Empty;
SmtpClient smtpClient = new SmtpClient();
MailMessage message = new MailMessage();

try
{
MailAddress fromAddress = new MailAddress(txtFromID.Text, “”);
//Provide smtp Host name
smtpClient.Host = txtsmtp.Text;
//made default credential as false
smtpClient.UseDefaultCredentials = false;
//Here pass the login from emailID and Password
smtpClient.Credentials = new System.Net.NetworkCredential(txtFromUID.Text, txtPwd.Text);
//Port is important, default port is 25.
smtpClient.Port = (txtPort.Text.Trim() == string.Empty) ? 25 : Convert.ToInt32(txtPort.Text.Trim());

//From email Id
message.From = fromAddress;
//Subject which we are going to send
message.Subject = txtSubject.Text.Trim().Replace(“‘”,””);
//Whether we are going to send body content as plain text/HTML format here i am going to use plain text so i kept html false
message.IsBodyHtml = false;

if ((txtTo.Text != null) && (txtTo.Text != string.Empty))
{
//Here we are splitting the email ID by comma separated
string[] emailTo = txtTo.Text.Split(‘,’);

foreach (string emails in emailTo)
{

if (emails.Trim().Length > 0)
{
//Add the To email id in Mail to List
message.To.Add(new MailAddress(emails));

}
}
}

// Message body content
message.Body = txtBody.Text.Trim().Replace(“‘”, “”);

//If SSL is enabled we have check the enable SSL true
if (chkSSL.Checked)
{
smtpClient.EnableSsl = true;
}
// Send SMTP mail
smtpClient.Send(message);

Clear();
lblMessage.Text = “Email successfully sent.”;

}
//Here am using smtp exception original mail exception able to catch
catch (SmtpException ex)
{
lblMessage.Text = “Email sending Failed.” + ex;
}
catch (Exception ex)
{
lblMessage.Text = “Email sending Failed.” + ex;
}
}

Output

Here I mentioned the gmail smtp configuration for sending the email for multiple users, you may give your email id and password and try the same.

thrth

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