Hi,
The CREATEDATE is also not necessarily the "correct" date. The OP mentions a
report. A report is often a work in progress, and the date that was in the
document when it was sent could be far different from the date when the
document was created. On the other hand, if the report was sent when it was
completed, I would assume that the date on which the report was received by
e-mail is much closer to the date in the report. In such a case, freezing the
date when the attachment is opened may be the best solution.
I agree that there isn't a fits-all answer to this question, but I think
that there is some value in spreading the word that it is possible to freeze
the date. If the sender had locked the date, there wouldn't have been a
problem.