Some causes of an unexpected values in "Sending message X of Y" are:
*_Stuck Read Receipt in Outbox_*
Do you have Outlook configured to automatically send *requests* for read
receipts? Do you manually elect to send one when composing an e-mail?
If so, why? Most likely you won't get back a read receipt. Recipients
either say No to sending the read receipt e-mail back to you or they
configure their e-mail client to ignore those requests. Unless you and
the recipient are within the same company that has a policy requiring
its employees to enable the option to acknowledge read receipts (which
usually means they configure Exchange so the requests do not go to
external recipients and ignore requests that come from external
senders), you probably won't get one. Besides, a read receipt does NOT
prove the recipient actually *read* your e-mail. It only means some
client sent back the acknowledgement after it "opened" your message.
Read receipts are hidden by Outlook in the Outbox folder, and Outlook
has problems sending read receipts which gets them stuck in the Outbox
folder (where you can't see them because they are hidden). The methods
to get rid of the stuck and hidden outbound read receipt e-mails from
your Outbox require you use a utility to dig into your message store
(i.e., the .pst file), so make a backup copy of it before editing:
- Use Outlookspy. It isn't free but its 1-month trial version is fully
functional. For instructions, see:
http://www.outlook-tips.net/howto/delete_rr.htm
- Use Microsoft's free MDBVU32.EXE utility. It is more difficult to use
than Outlookspy. For instructions, see:
http://www.howto-outlook.com/howto/deletereadreceipt.htm
*_Wrong Values Displayed in Status Message (Outlook 2003/2007 Bug)_*
/(Do not know if this bug is still present in Outlook 2010.)/
That "Sending message X of Y" has wrong values could be due to a known
bug in how Outlook 2003/2007 constructs the counts shown in that status
message.
Do you have multiple accounts defined in Outlook? If so, how many
accounts are defined? Of those, how many of them are enabled?
When the bug is exhibited, typically n-1 gets added to the counts where
n is the number of enabled accounts; however, differing results have
been reported so the bug might only be algorithmically defined (i.e.,
there's no handy and easy formula to describe the bug).