Hi,
There are two different receipts available to Outlook users. In addition to a read receipt, you can also request a delivery receipt, which is helpful in verifying that the email was
successfully delivered to a mailbox. However, this does not prove that the message was actually read by the recipient. If a recipient declines to send a read receipt there is no audit trail
that the message was read.
It is possible to recall a message if you are on an Exchange server. Please refer to the following Knowledge Base article for more information.
OL2000: (CW) Features Available with Microsoft Exchange Server (198184)
http://support.microsoft.com/default.aspx?scid=KB;EN-US;198184
Regards,
Scott Atkins MCSE, MCSA
Partner Technical Lead - Outlook
Microsoft Technical Support
for Platforms and Business Applications
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