On Aug 15, 2006, at 7:04 PM, Bill Holt wrote:

> Does anyone know how to set "Mail" so that it will report when a  
> message is received and when it is actually opened?

As far as I know, Apple's mail does not have native support for this  
although there may be an Applescript around to partially add it.  
There are certainly Applescripts around to notify an Apple mail user  
of a receipt request on a message she received.

The problem with these things is that they're more complex than they  
seem, over the Internet.

When is a message delivered? Is it delivered when it enters a mail  
spool on a mail server, or when a user actually downloads it via POP  
or IMAP? The delivery status notification protocols were only  
approved a few years ago and were added to sendmail, the most widely  
used mail transport agent on the Internet, only recently. This means  
few email programs support them. Some closed mail systems (Microsoft,  
IBM) have been able to do it for some time, but only when talking to  
themselves.

When is a mail read? When a POP client downloads it? How often do you  
download mail and save it to read until later?

There are programs that do notify you when a mail has been read.

Microsoft Outlook has a nonstandard flag you can put on an email to  
get notified when it's read on Outlook or Outlook Express. The reader  
gets a popup when the message is opened asking her if you should be  
notified.

There is another method of which I heartily disapprove. Programs such  
as MSGTAG notify the sender without telling the reader what they're  
doing, and they do it in a very underhanded way. The sender sends the  
mail through the MSGTAG company's server and they put a bit of html  
code in the mail that gets activated when the email is opened. That  
code notifies the company that the mail was opened and they notify you.

How would you define spyware? This is exactly what the spam companies  
do to freshen their mailing lists.
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