(Android™) Send Email to Distribution List

Sends the same email to a list of 1000 email addresses in 50 sends where each email has 20 recipients.

Note: Chilkat is not intended nor designed for mass emailing. A solution such as this might be used for a corporate emailing to employees, or an emailing to newsletter subscribers.

Chilkat Android™ Downloads Android™ Java Libraries Android C/C++ Libraries

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkMailMan mailman = new CkMailMan();
    boolean success;

    mailman.put_SmtpHost("smtp.mymailserver.com");
    mailman.put_SmtpPort(465);
    mailman.put_SmtpSsl(true);
    mailman.put_SmtpUsername("myUsername");
    mailman.put_SmtpPassword("myPassword");

    // Create a new email object
    CkEmail email = new CkEmail();
    email.put_Subject("This is a test");
    email.put_Body("This is a test");
    email.put_From("Senders Name <sender@example.com>");
    email.AddTo("Subscribers","subscribers@example.com");

    CkBinData bdMime = new CkBinData();
    mailman.RenderToMimeBd(email,bdMime);

    // Load a file containing one email address per line.
    CkStringTable distList = new CkStringTable();
    success = distList.AppendFromFile(1000,"utf-8","qa_data/distList.txt");
    if (success == false) {
        Log.i(TAG, distList.lastErrorText());
        return;
        }

    CkStringBuilder sbRecipients = new CkStringBuilder();

    int i = 0;
    int szDistList = distList.get_Count();
    int j = 0;
    while (i < szDistList) {

        // Build a list of comma-separated recipients.
        if (j > 0) {
            sbRecipients.Append(",");
            }

        sbRecipients.Append(distList.stringAt(i));

        i = i + 1;
        j = j + 1;

        // If we have 20 recipients, or we have the final recipient in the final chunk, then send.
        if ((j == 20) or (i == szDistList)) {
            success = mailman.SendMimeBd("sender@example.com",sbRecipients.getAsString(),bdMime);
            if (success != true) {
                Log.i(TAG, mailman.lastErrorText());
                return;
                }

            j = 0;
            sbRecipients.Clear();
            }

        }

    success = mailman.CloseSmtpConnection();
    if (success != true) {
        Log.i(TAG, "Connection to SMTP server not closed cleanly.");
        }

    Log.i(TAG, "Email sent to distirbution list.");

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}