This article basically describe how to send bulk mail to multiple recepctionist.for this we use-
System.Net.Mail namespace.
System.Net.Mail is the namespace used to send email if you are using the 2.0 (or higher) .NET Framework. Although some functionality has been removed, the new System.Net.Mail namespace is much more versatile than the older CDO dependant System.Web.Mail.
For modern business, bulk email -also known as spam mail- has become one of the more successful ways to market and advertise a company's products and services. But like any marketing strategy, bulk emailing has its share of advantages and disadvantages.
One of the downsides to bulk email is that it may not reach its target recipient. This can be blamed on bulk email blockers programmed into email accounts. Blockers segregate bulk email into a separate email folder, so the reader cannot directly access it from his inbox.
On the other hand, one of the advantages of bulk emailing is that it has the power to communicate directly to the target market. Such communication is done individually, so much so that the recipient may be able to identify personally with the message. Another benefit for businesses using this strategy is that they do not have to spend so much on advertising. Using bulk email is actually much cheaper than utilizing print advertisements or radio and television commercials.
What do I need to send email in .NET
First, and foremost, you need the .NET Framework installed. Then you need a reference to the System.dll (automatically included in ASP.NET applications). Then you need to use the System.Net.Mail namespace to create and send email messages.
Once you have programmatically set up your application, you will need a relay server to send email through. A relay server is a mail server, or a SMTP server/service, that can handle sending email. System.Net.Mail simply sends the mail to a relay server, and the relay server is responsible for delivering it to the final destination.
.aspx page:-
<body>
<form id="form1" runat="server">
<div>
<table align="center" bgcolor="#cccc99">
<tr>
<td>
<table cellpadding=3 cellspacing=4 bgcolor="#ccffcc">
<tr>
<td>
<asp:Label ID="lblto" runat="server" Text="To"></asp:Label>
<asp:TextBox ID="txtemailto" runat="server" Width="250"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="lblfrom" runat="server" Text="From"></asp:Label>
<asp:TextBox ID="txtemailfrom" runat="server" Width="250"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="lblBcc" runat="server" Text="Bcc"></asp:Label>
<asp:TextBox ID="txtBcc" runat="server" Width="250"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="lblcc" runat="server" Text="cc"></asp:Label>
<asp:TextBox ID="txtcc" runat="server" Width="250"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="lblsubject" runat="server" Text="Subject"></asp:Label>
<asp:TextBox ID="txtsubject" runat="server" Width="250"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="lblbody" runat="server" Text="Body"></asp:Label>
<asp:TextBox ID="txtbody" runat="server" Width="250" Height="50"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="lblAttachFile" runat="server" Text="File to send:" Width="100px"></asp:Label>
<input type="file" id="fileAttachement" runat="server" name="fileAttachement" width="200px" />
</td>
</tr>
<tr>
<td align="center">
<asp:Button ID="btn1" runat="server" Text="Send" OnClick="btn1_Click"/>
</td>
</tr>
</table>
</td>
</tr>
</table>
</div>
</form>
</body>
.cs page:-
using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;
using System.Data.SqlClient;
public partial class bulkmail : System.Web.UI.Page
{
SqlDataAdapter da;
DataSet ds = new DataSet();
SqlConnection con;
SqlCommand cmd = new SqlCommand();
SqlDataReader read_Email;
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btn1_Click(object sender, EventArgs e)
{
ArrayList list_emails = new ArrayList();
int i = 0;
string email;
con=new SqlConnection(ConfigurationManager.AppSettings["connect"]);
con.Open();
SqlCommand cmd = new SqlCommand("Select email from Email", con);
SqlDataReader read_Email = cmd.ExecuteReader();
while (read_Email.Read())
{
email = read_Email.GetValue(i).ToString();
list_emails.Add(email); //Add email to a arraylist
i = i + 1 - 1;
}
read_Email.Close();
con.Close(); //Close connection
foreach (string email_to in list_emails)
{
MailMessage mail = new MailMessage();
Attachment attach = new Attachment(fileAttachement.PostedFile.FileName);
mail.To.Add(email_to);
mail.From = new MailAddress("[email protected]");
string Bcc = txtBcc.Text;
string cc = txtcc.Text;
mail.Subject = txtsubject.Text;
mail.Body =txtbody.Text;
SmtpClient smtp = new SmtpClient("SMTP Server");
smtp.Send(mail);
}
}
}
Output:-