Retrieve UnRead Emails from Gmail – JavaMail API + IMAP

by

You’re using the same index to get a message from your list as to get a part from that message. So you’re fetching part 1 from message 1, part 2 from message 2, etc. At some point, you’ll hit a message N that has fewer than N parts, and you get the ArrayIndexOutOfBoundsException.

Multipart mp = (Multipart)messages[i].getContent();  
Object p = mp.getBodyPart(i).getContent();

Also, you’re assuming that all your messages are multipart. The first time you call Message.getContent() on a non-multipart message, you’ll get a ClassCastException as it’ll most likely be returning you a String instead.

Multipart mp = (Multipart)messages[i].getContent();

Similarly, you’re assuming non-nested multiparts. The first time you get a message with a top-level multipart/mixed containing a multipart/alternative as its first subpart, the call to MimeBodyPart.getContent() will return another Multipart and thus p.toString() will just return a Java object identifier, not the message content you want.

Object p = mp.getBodyPart(i).getContent();  
String q = p.toString();//object has the body content

To do it right, you need to walk the message structure and determine the “body” part you care about.

More Related Contents:

  1. Getting mail from GMail into Java application using IMAP
  2. My Java program stopped sending emails using my gmail Account
  3. Google Apps Mail Send Limit and Alternative [closed]
  4. How can I send an email by Java application using GMail, Yahoo, or Hotmail?
  5. How can I download all emails with attachments from Gmail?
  6. Using Javamail to connect to Gmail smtp server ignores specified port and tries to use 25
  7. Having trouble with PHPMailer
  8. JavaMail IMAP over SSL quite slow – Bulk fetching multiple messages
  9. Force emails not to be grouped into conversations
  10. Reading emails from Gmail in C#
  11. What non-standard behaviour features does Gmail exhibit, when it is programmatically used as a POP3 server?
  12. HTML email in Gmail – CSS style attribute removed
  13. How can you send mail using IMAP?
  14. Python IMAP search using a subject encoded with utf-8
  15. How to to send mail using gmail in Laravel?
  16. using c# .net libraries to check for IMAP messages from gmail servers [closed]
  17. JavaMail API to iMail — java.net.SocketException: Permission denied: connect
  18. change sender address when sending mail through gmail in c#
  19. How to configure WAMP (localhost) to send email using Gmail?
  20. How to encode the plus (+) symbol in a URL
  21. Send email via gmail
  22. Postfix and OpenJDK 11: “No appropriate protocol (protocol is disabled or cipher suites are inappropriate)”
  23. How do I write a media query for Gmail?
  24. Solve error javax.mail.AuthenticationFailedException
  25. ‘observe’ on ‘MutationObserver’: parameter 1 is not of type ‘Node’
  26. phpmailer and gmail SMTP ERROR: Failed to connect to server: Network is unreachable (101) SMTP connect() failed
  27. How to send emails with google using nodemailer after Google disabled less sure app option?
  28. PHP mail using Gmail
  29. Android EditText Gmail like to field
  30. Flex / Grid properties are deleted in gmail email

Leave a Comment