Android Programming - Send mail

Question

I'm using the following piece of code in Android to send a mail:

 Intent emailIntent = new Intent(Intent.ACTION_SEND);
 emailIntent.setType("text/html");
 emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL,sendTo );

 emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "test" );
 emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, "msg" );

When code is compiled and run, its asking me options of selecting applications like "GMail", "BlueTooth" etc. But I want the mail to be sent without user intervention. Even sending it by MMS will be much better for me. Can some one suggest me how to do it?

Dave.B · Accepted Answer · 2011-05-17 16:23:13Z

6

You need to include the java mail library and dependencies in your project and then write a helper class like the one below.


public class GMailSender extends javax.mail.Authenticator {
 private String mailhost = "smtp.gmail.com";
 private String user;
 private String password;
 private Session session;

 static {
  Security.addProvider(new JSSEProvider());
 }

 public GMailSender(String user, String password) {
  this.user = user;
  this.password = password;

  Properties props = new Properties();
  props.setProperty("mail.transport.protocol", "smtp");
  props.setProperty("mail.host", mailhost);
  props.put("mail.smtp.auth", "true");
  props.put("mail.smtp.port", "465");
  props.put("mail.smtp.socketFactory.port", "465");
  props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
  props.put("mail.smtp.socketFactory.fallback", "false");
  props.setProperty("mail.smtp.quitwait", "false");

  session = Session.getDefaultInstance(props, this);
 }

 protected PasswordAuthentication getPasswordAuthentication() {
  return new PasswordAuthentication(user, password);
 }

 public synchronized void sendMail(String subject, String body, String sender, String recipients) throws Exception {
  MimeMessage message = new MimeMessage(session);
  DataHandler handler = new DataHandler(new ByteArrayDataSource(body.getBytes(), "text/plain"));
  message.setSender(new InternetAddress(sender));
  message.setSubject(subject);
  message.setDataHandler(handler);
  if (recipients.indexOf(',') > 0)
   message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(recipients));
  else
   message.setRecipient(Message.RecipientType.TO, new InternetAddress(recipients));
  Transport.send(message);
 }

 public class ByteArrayDataSource implements DataSource {
  private byte[] data;
  private String type;

  public ByteArrayDataSource(byte[] data, String type) {
   super();
   this.data = data;
   this.type = type;
  }

  public ByteArrayDataSource(byte[] data) {
   super();
   this.data = data;
  }

  public void setType(String type) {
   this.type = type;
  }

  public String getContentType() {
   if (type == null)
    return "application/octet-stream";
   else
    return type;
  }

  public InputStream getInputStream() throws IOException {
   return new ByteArrayInputStream(data);
  }

  public String getName() {
   return "ByteArrayDataSource";
  }

  public OutputStream getOutputStream() throws IOException {
   throw new IOException("Not Supported");
  }
 }
}

the JSSEProvider class


@SuppressWarnings("serial")
public final class JSSEProvider extends Provider {
 public JSSEProvider() {
  super("HarmonyJSSE", 1.0, "Harmony JSSE Provider");
  AccessController.doPrivileged(new java.security.PrivilegedAction() {
   public Void run() {
    put("SSLContext.TLS", "org.apache.harmony.xnet.provider.jsse.SSLContextImpl");
    put("Alg.Alias.SSLContext.TLSv1", "TLS");
    put("KeyManagerFactory.X509", "org.apache.harmony.xnet.provider.jsse.KeyManagerFactoryImpl");
    put("TrustManagerFactory.X509", "org.apache.harmony.xnet.provider.jsse.TrustManagerFactoryImpl");
    return null;
   }
  });
 }
}

Sending the email is then as simple as


GMailSender sender = new GMailSender("username", "password");
sender.sendMail("subject", body, "sender", recipients);

edited May 17, 2011 at 16:23

answered Apr 26, 2010 at 14:24

Dave.B

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6 Comments

Satyam Over a year ago

Android already has "GMail" app. How can I use the same account to send a mail instead of alerting user to provide those details?

o0'. Over a year ago

I guess you can't: either you ask user's password, or you ask gmail app to send the mail for you.

Dave.B Over a year ago

assuming the user has their credentials stored in the gmail app you may be able to retrieve them via a content provider if they are exposed. Otherwise you have to either ask for credentials or use a gmail account which you've set up for your application to send mail. I use the above class to report uncaught exceptions.

Avi Shukron Over a year ago

From where is this "JSSEProvider" coming from? i cant find it in the "security" package...

Dave.B Over a year ago

That is the concrete implementation of the abstract Provider class I've edited the post above to show a valid implementation. sorry for the late reply to your comment i havent been on this site in a while

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Robby Pond · Accepted Answer · 2010-04-26 14:26:33Z

3

You can't send an email or sms using the built-in apps without user intervention. You have to use an external mail library like the other answer mentions.

answered Apr 26, 2010 at 14:26

Robby Pond

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