Command Center

If you attempt to send a message that is too large for your
mail server you may be unable to delete it from the Outbox. An error dialog
will say that the MAPI spooler has begun sending the message.


First, try setting Outlook offline using the File, Offline menu. Wait
a few minutes (about 5) or so or close Outlook and reopen.

If you are unable to delete the message while in offline mode or cannot
go into offline mode, you'll need to change your default delivery location.


The following steps are for Outlook 2002/2003, the steps for other
versions are the similar, although the menus are different. For Outlook 2007
and 2010, see Delete a Message Stuck in the Outbox in Outlook 2007/2010

1. 
   Add
   a new PST using the File, New, Outlook Data File menu.
   
    
2. Open the Email Accounts dialog on the Tools menu.
   
    
3. Select view or Change existing email accounts and click Next.
   
    
4. 
   
   Select
   the new personal folders file from the Deliver new email to the
   following location list.
   
    
5. Click Finish and restart Outlook.
   
    
6. Show the folder list, using Ctrl+6 if necessary, and find the old
   Outbox. Delete the message.
   
    
7. Repeat steps 2, 3, 4, and 5 to restore the original pst as the
   default delivery location.
   
    
8. Show the folder list and move any new messages from the new pst 
   to the original pst.
   
    
9. 
   Right
   click on the new folder's name and Choose Close to remove it from your
   profile.

Updated Wedn




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OR

Move it to the Draft Folder






And then set about removing the contents from there. If you
are unable to delete it there you can change it's destination to
yourself as a test message with everything removed and then delete it
from the Sent Items and received items.

Of course if this is on a
Network with a server you may have problems getting rid of it depending
on what Mail System is being used. But if you still have it locally you
can move it to the Drafts Folder and work on it from there.



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Delete an item stuck in the Outbox folder:
- Load Outlook.
- Put Outlook in offline mode (File -> Work Offline: enable).
- Exit Outlook.
- Load Outlook in its safe mode ("outlook.exe /safe").
- Delete the stuck item in the Outbox folder.  If you do not want the
item to move into the Deleted Items folder, use Shift+Del to
permanently delete the item.
- Put Outlook in online mode (File -> Work Offline: disable).
- Restart Outlook in its normal mode.


E-mail is NOT a reliable file transfer mechanism.  It was not intended or
designed for that.  It was designed to send lots of small messages.  There
is no CRC check on the file to ensure integrity.  There is no resume to
re-retrieve the file if the e-mail download fails.  There is no guarantee
the e-mail will arrive uncorrupted.  Large e-mails can generate timeouts and
retries due to the delay when anti-virus programs interrogate their content.

Do not use e-mail to send large files.  It is rude to the recipient.  Not
every recipient might want your large file.  Not every recipient has
high-speed broadband Internet access.  Many users still use slow dial-up
access, especially if all they do is e-mail.  You waste your e-mail
provider's disk space and their bandwidth to send a huge e-mail.  You waste
the e-mail provider's disk space and bandwidth at the recipient's end.  You
eat up the disk quota for the recipient's mailbox (which could render it
unusable so further e-mails get rejected due to a full mailbox).  You
irritate users still on dial-up that have to wait eons waiting to download
your huge e-mail. Some users have usage quotas (i.e., so many bytes/month)
and you waste it with a file that they may not want.  Don't be insensitive
to recipients of your e-mails.  Take the large file out of the e-mail.

Save the file in online storage and send the recipient a URL link to the
file.  Your e-mail remains small.  It is more likely to arrive.  It is more
likely to be seen.  The recipient can decide whether or not and when to
download your large file.  Be polite by sending small e-mails.

Your ISP probably allows many gigabytes of online storage for personal web
pages.  Upload your file there and provide a URL link to it.  Other methods
(of using online storage), all free, are:

http://www.adrive.com/              (50GB max quota, 2GB max file size)
http://www.driveway.com/            (500MB max file size)
http://www.filefactory.com/         (300MB max file size)
http://www.megashares.com/          (10GB max file size)
http://www.sendspace.com/           (300MB max file size)
http://www.spread-it.com/           (500MB max file size)
http://www.transferbigfiles.com/    (1GB max file size)
http://zshare.net/                  (500MB max file size)
http://www.zupload.com/             (500MB max file size)

If it is sensitive content and when storing it online in a public storage
area or to guard it against whomever operates the online storage service,
remember to encrypt it.

REFERENCES
http://www.outlook-tips.net/howto/stuck_message.htm

http://techrepublic.com.com/5208-6230-0.html?forumID=101&threadID=211940&messageID=2175765&tag=content;leftCol

http://www.eggheadcafe.com/software/aspnet/36045448/oversized-mb-item-stuck-in-outbox.aspx