[Enigmail] How to send using a shared key

[Robert J. Hansen]

On Sat, 2008-01-05 at 22:16 -0500, James Rome wrote:
> How do I use enigmail to send encrypted e-mail to a list using a 
> pre-communicated symmetric key?

There is no easy way to do this.  There is almost certainly some way to
do this by tinkering with the command line, but that would be an awful
hack and should not be done except in the most extreme of circumstances.