use "Sender:", please (Re: Message header fields)
> From: Miles Bader
> Newsgroups: gmane.linux.debian.devel.general
> Subject: Re: Message header fields
> Date: Mon, 05 Feb 2007 19:08:09 +0900
> Ben Finney <firstname.lastname@example.org> writes:
>> Meanwhile, the message header is about the message *as an email
>> message*, and the From field is supposed to be about the individual
>> who sent the message.
> ... unless there's a "Sender:" header, in which case _that's_ the person
> who send the email, and the "From:" header names the "true sender" of
> the message.
Yes, and this is stated on various RFCs on E-Mail and E-News...