Solved

Mass Email

Posted on 2011-09-26
2
173 Views
Last Modified: 2012-05-12
Hey guys i am coding in c# and have a databse with email address, i want to send out newletter to them.

please help?
0
Comment
Question by:JCWEBHOST
2 Comments
 
LVL 16

Accepted Solution

by:
disrupt earned 250 total points
ID: 36599040
Take a look at this:

http://www.aspneter.com/2009/05/sending-massbulk-e-mail-using-aspnet/#more-90

Shows you how to attach emails from database and mass send.

code in c#:

protected void btnImport_Click(object sender, System.EventArgs e)
{
	SqlConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings("MyConn").ConnectionString);
	try {
		connection.Open();
		foreach (string txt in Directory.GetFiles(Server.MapPath("Email_Lists"))) {
			string[] emails = System.IO.File.ReadAllLines(txt);
			System.Text.RegularExpressions.Regex reg = new System.Text.RegularExpressions.Regex("\\w+([-+.']\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*");
			foreach (string email in emails) {
				if (reg.IsMatch(email)) {
					SqlCommand cmd = new SqlCommand();
					cmd.Connection = connection;
					cmd.CommandText = "INSERT INTO EmailAddresses (Email) VALUES(@email)";
					cmd.CommandType = System.Data.CommandType.Text;
					cmd.Parameters.Add("@email", System.Data.SqlDbType.VarChar).Value = email;
					cmd.ExecuteNonQuery();
					cmd.Dispose();
				}
			}
		}
	} catch (Exception ex) {
		Response.Write(ex.Message);
	} finally {
		connection.Close();
	}
}

Open in new window


private void StartCampaign()
{
	SqlConnection connection = new SqlConnection("Data Source=xx.xxx.xxx.xxx,1433;" + "Initial Catalog=MyDB;" + "User ID=xxxxxx;Password=xxxxxxxx;");

	try {
		connection.Open();
		SqlCommand command = new SqlCommand("SELECT TOP(@count) Email FROM EmailAddresses", connection);
		command.Parameters.Add("@count", System.Data.SqlDbType.Int).Value = this.txtNumberOfMessages.Text;
		SqlDataReader reader = command.ExecuteReader;

		while (reader.Read) {
			// send new email to all returned addresses
			SendEmail(reader(0).ToString);
		}
		reader.Close();
	} catch (Exception ex) {
	// ToDo: something about the exception if any
	} finally {
		connection.Close();
	}

}

private void SendEmail(string email)
{
	// declare new mail message
	MailMessage message = new MailMessage();
	// if you plan to have html content then enable property IsBodyHtml
	message.IsBodyHtml = true;
	// set the message subject
	message.Subject = this.txtSubject.Text.Trim;
	message.From = new MailAddress("youremail@domain.com", "Your Company Name - Newsletter");
	message.To.Add(new MailAddress(email));
	// set the message body
	message.Body = this.txtMessage.Text;
	// declare new smtpclient to send our message
	SmtpClient mailClient = new SmtpClient(this.txtSmtp.Text, this.txtSmtpPort.Text);
	mailClient.Send(message);
	message.Dispose();
}

Open in new window

0
 
LVL 17

Assisted Solution

by:OriNetworks
OriNetworks earned 250 total points
ID: 36599341
The suggested code will work but may require some additions. The key to this is being able to limit how many people it sends to at one time to prevent issues with limits on your email server and spam filtering, which it does but requires manual intervention. Also being able to report which addresses already completed.
For example, if you had a table that loads the email addresses (EmailAddress varchar(100), SentOn smalldatetime), then 'select top(@Count) EmailAddress from MyTable where SentOn is null' gives you the next addresses then for each number of records that you want to send at a time (e.g. 50 recipients at a time) it sends the message then updates the record with the timestamp to move onto the next 50.  That would be the way I would go.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Introduction Hi all and welcome to my first article on Experts Exchange. A while ago, someone asked me if i could do some tutorials on object oriented programming. I decided to do them on C#. Now you may ask me, why's that? Well, one of the re…
This article aims to explain the working of CircularLogArchiver. This tool was designed to solve the buildup of log file in cases where systems do not support circular logging or where circular logging is not enabled
This video explains how to create simple products associated to Magento configurable product and offers fast way of their generation with Store Manager for Magento tool.
I designed this idea while studying technology in the classroom.  This is a semester long project.  Students are asked to take photographs on a specific topic which they find meaningful, it can be a place or situation such as travel or homelessness.…

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now