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Re: JavaMail: detecting opened mail
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Posted: Aug 9, 2003 12:25 PM
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There's no guaranteed way of being notified when someone has received or viewed a piece of email.
There are two ways of requesting a receipt.
1. You can ask the mail server (the MTA) which the recipient uses to notify you that it received the mail -- but this does not indicate anything to do with the user.
2. You can ask the user's mail client (the MUA) to send you a receipt when the message is opened. This does not indicate that the recipient has actually read the message though -- only that it was opened. They may have opened it and forgotten to read it or immediately moved onto the next message for instance.
Neither of these two methods are guaranteed to be supported by the software that your recipient uses. Their MUA or MTA may not support return receipts or their function may have been turned off.
To find out to how to request the receipt (by adding a header to the email when it is sent for instance) do a search on Google using combinations of the terms:
email, receipt, mua, mta, client, server, request, header
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