CODEWITHSUNDEEP
c#asp.netemail
Ender Ariç
Ender Ariç

Reputation: 49

ASP.NET send mail to multiple users

Hello i have a problem with sendig mails from asp.net web site. Here is my code

        private void mailgonder(string mail, string adsoyad)
    {
        MailMessage mm = new MailMessage();
        mm.From = new MailAddress("my mail address", "my name");

        mm.Subject = "YENİ DUYURU";
        mm.Body = "Sistemde okumadığınız yeni bir duyuru bulunmaktadır.";

        mm.To.Add(new MailAddress(mail, adsoyad));
        SmtpClient sc = new SmtpClient("my smtp client");
        sc.Port = 587;
        sc.Credentials = new NetworkCredential("my username", "my password");
        sc.Send(mm);
    }

I want to send mail to 1500 users with same time. How can i do this in asp.net (we will have over 1000 member in this web project)

I can send like this to one person. But i don't know how can i send this to multiple persons

Thanks

Upvotes: 0

Views: 1325

Answers (3)

psoshmo
psoshmo

Reputation: 1560

I Believe the simplest approach by far is to make a contact group. Doing this will keep the amount of code written to a minimum. Here is a link explaining how to do so in Outlook How to make a contact group

Once you have the contact group setup, simply do this:

  String Devemail = "[email protected]";
  MailMessage message = new MailMessage();
  message.To.Add(Devemail);
  //The rest of your code here

The rest of your code will work fine. If someone has a better/simpler approach, please feel free to correct me.

EDIT: I am kind of shocked that we recommend he hard code 1500 email addresses into his code. Can someone give me a good reason for using that approach over using an email group?

Upvotes: 0

Perfect28
Perfect28

Reputation: 11317

As MailMessage.To is a collection, you can add as much as you want : 

 mm.To.Add(new MailAddress("[email protected]", "user1"));
 mm.To.Add(new MailAddress("[email protected]", "user2"));
 mm.To.Add(new MailAddress("[email protected]", "user3"));
 mm.To.Add(new MailAddress("[email protected]", "user4"));

.....

until 

 mm.To.Add(new MailAddress("[email protected]", "user1499"));
 mm.To.Add(new MailAddress("[email protected]", "user1500"));

NOTE : Restrictions may exist according to your mail server or access provider. For more efficiency, use a mailing list.

Upvotes: 2

Oğuz Sezer
Oğuz Sezer

Reputation: 320

You have to send each user seperate emails. Do not, never, add more than 1 address to TO unless you have sender score certification, doing opposite will cause you get banned from mail providers since they would think you are a spammer. And also spam list is global, which means if you get banned from gmail, you will also get banned from hotmail or yahoo in a short period of time.

Just select for example 20 email addresses from database each time and loop that 20 and call your mailgonder method for each.

Other than what I wrote above, if you write multiple TO's, each of your users will see each others email adressses which is not cool from user perspective.

Upvotes: 0

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