Sending and Reading Messages Using JavaMail

The following topics are addressed here:

• To Send a Message Using JavaMail

• To Read a Message Using JavaMail

To Send a Message Using JavaMail

1. Import the packages that you need.

   import java.util.*;
   import javax.activation.*;
   import javax.mail.*;
   import javax.mail.internet.*;
   import javax.naming.*;

2. Look up the JavaMail session.

   InitialContext ic = new InitialContext();
   String snName = "java:comp/env/mail/MyMailSession";
   Session session = (Session)ic.lookup(snName);

   For more information, see Looking Up a JavaMail Session.

3. Override the JavaMail session properties if necessary.

   For example:

   Properties props = session.getProperties();
   props.put("mail.from", "user2@mailserver.com");

4. Create a MimeMessage.

   The msgRecipient, msgSubject, and msgTxt variables in the following example contain input from the user:

   Message msg = new MimeMessage(session);
   msg.setSubject(msgSubject);
   msg.setSentDate(new Date());
   msg.setFrom();
   msg.setRecipients(Message.RecipientType.TO, 
      InternetAddress.parse(msgRecipient, false));
   msg.setText(msgTxt);

5. Send the message.

   Transport.send(msg);

To Read a Message Using JavaMail

1. Import the packages that you need.

   import java.util.*;
   import javax.activation.*;
   import javax.mail.*;
   import javax.mail.internet.*;
   import javax.naming.*;

2. Look up the JavaMail session.

   InitialContext ic = new InitialContext();
   String snName = "java:comp/env/mail/MyMailSession";
   Session session = (javax.mail.Session)ic.lookup(snName);

   For more information, see Looking Up a JavaMail Session.

3. Override the JavaMail session properties if necessary.

   For example:

   Properties props = session.getProperties();
   props.put("mail.from", "user2@mailserver.com");

4. Get a Store object from the Session, then connect to the mail server using the Store object’s connect method.

   You must supply a mail server name, a mail user name, and a password.

   Store store = session.getStore();
   store.connect("MailServer", "MailUser", "secret");

5. Get the INBOX folder.

   Folder folder = store.getFolder("INBOX");

6. It is efficient to read the Message objects (which represent messages on the server) into an array.

   Message[] messages = folder.getMessages();