I would comment that all email messages already contain the email
address of the poster in the 'FROM' field althouth they are munged in
many cases for DMARC purposes but it is hardly that complicated to
de-munge them. I have been doing that for years.
On 3 Sep 2020 at 16:58, Bruce Bowman wrote:
Drew -- If you allow (or maybe even force) html messages and do not