How to track Delivery and Read Receipts, to update the e-mail status?

Question

Hi,
I got bit confused, How can I came to know that my e-mail has been successfully sent or not without opening my inbox.
Am sending 50,000 mails per day by using java mail sending program, while sending I am enabled Delivery and Read receipt and I saved message-id in database and I got that receipt back to my inbox.
Then I am reading my Inbox using another java program based on message-id concept, And also I need to parse the body of the mail to update the reason if any message failed.
Here my Inbox received more than 1 lac mails per day as receipts. Because am sending 50,000 mails, So, I got 2 receipt mails for 1 mail, totally 50,000*2=1lac mails in Inbox. My problem is, my reading Inbox java program not able read all 1lac mails at one day. It just reading 5,000 mails per day. When my next day mail sending process started, again i am getting another 1 lac receipts.
Since I am not able to read and delete the receipts completely, mail counts in my inbox getting accumulated. So, I got stuck, How can I do this?
If anybody have any other ideas please share with me.
Already I surfed on net lot, but I can`t find solution for this concept.
Thanks in advance.

Answer 1

Hi EJP,
step 2: Taking total inbox length using message.length
The message count is available via Folder.getMessageCount*().//ok I will try this one.*
step 3: In for loop, for(i=0; i < = n; i+){+ //--here we are getting mails one by one
That should be i < n, not i <= n. *//here I was wrongly specified, I used i<n only.*
step 5: In that mail body we are searching our own unique keyword(which we set for our unique mail reference)
Searching how?
In order to find the keyword, we are getting entire text/plain mail body using below method,
//To get body plain/text body part start here
     public static void getTextPlainBodyPart(Part p) throws Exception {
          if (p.isMimeType("text/plain")) {
               if (!(showStructure) && !(saveAttachments)){
                   lstr = (String)p.getContent();
          }else if (p.isMimeType("multipart/*")) {
             Multipart mp = (Multipart)p.getContent();
             level++;
              int count = mp.getCount();
              for (int i = 0; i < count; i++){
             getTextPlainBodyPart(mp.getBodyPart(i));
              level--;
//To get body plain/text body part end hereAbove method will return entire body of the mail in one string variable, Eg: String mailBody;(*mailBody variable contains entire body)*
Then using mailBody variable we are searching our own keyword(which we set for our unique mail reference while sending mail) using below technique,
if(lstr.indexOf("!$*#*$") != -1 && lstr.lastIndexOf("$*#*$!") != -1){
KeyWord = lstr.substring(lstr.indexOf("!$*#*$")+3,lstr.lastIndexOf("$*#*$!"));
//to get reason alone
if(lstr.contains("Reason:")){
     Pattern p = Pattern.compile("Reason:\\s([^\\n])*");
Matcher m = p.matcher(lstr);
boolean result = m.find();
     while(result) {
        reason = m.group();
         result = m.find();
//System.out.println("Reason:>>>>"+reason);
}else{
     reason = "";
}After getting that keyword in KeyWord variable,
then we are updating our database using that KeyWord,(here we are using KeyWord variable in where condition in update query)
Note:_ KeyWord is nothing but, we were stored all our unique keyword against every mails while sending.So, If when get that keyword while reading the receipts,then we can update our table using that same keyword.
guide how can I do this effieciently. And if you any other new concept please share with me.
Thanks in advance..
Edited by: EJP on 17/03/2011 16:54: added code tags. Please use them. Code is 100% illegible otherwise.