Re: the header argument again, was What does the mailsig mechanism mean?

> It's also important to keep in mind that the software we use is often
> not the software that typical Internet users use.  As a specific
> example, I've often seen comments to the effect that MUAs don't
> display what's in the Subject: line.   If you use MS Outlook (which

I hope it's obvious I meant Sender:

> I'm not saying is a good idea, but a whole lot of people do), it does
> show the Sender: header, displaying something like "from <sender> on
> behalf of <from>."