如何从Web应用程序向多个收件人发送邮件？

Question

I have developed a asp.net Mvc 4 project and now i am planing to integrate a Mail system in my application.Initially i taught like integrating mail System in my existing web application but later i moved it to a console application using Scheduler to send mail at some time interval.

My scenario is like i have a list of mail ids and i need to send mail to all these mail ids . I have checked System.Web.Mail and i found i can only give one email address at a time. Is it possible in System.Web.Mail or is there any other library available to achieve my scenario.

Answer 1

To in System.Net.Mail is a MailAddressCollection ,so you can add how many addresses you need.

MailMessage msg = new MailMessage();
msg.To.Add(...);
msg.To.Add(...);

Answer 2

Chris's answer is correct but you may want to also consider using a mail service. Here are some you could try - they all have a free tier to get started on.

• http://sendgrid.com/

• http://www.mailgun.com/

• https://mandrill.com/

• http://aws.amazon.com/ses/

Answer 3

You can easily sent emails to more than one recipient. Here is a sample that uses a SMTP server to send an email to multiple addreses:

//using System.Net.Mail;

public void SendEmail(){

    MailMessage email = new MailMessage();

    email.To.Add("first@email.com");
    email.To.Add("second@email.com");
    email.To.Add("third@email.com");

    email.From = new MailAddress("me@email.com");

    string smtpHost = "your.SMTP.host";
    int smtpPort = 25;

    using(SmtpClient mailClient = new SmtpClient(smtpHost, smtpPort)){
        mailClient.Send(email);
    }
}

Just a note: if you go with SMTP, you should probably have a look also on MSDN for the SmtpClient.Send method, just to be sure you are catching any related exceptions.