send/only

Send/only permit to send message to many addresses with only a command, but how is the header?
Look here:
send/only [test@test.com maxint@tiscali.it] "Testing Rebol send/only"


The source of the email received will be:

From: MaxV
To:
Date: Wed, 27 Feb 2013 15:26:40 +0100
Subject: test Rebol send/only
X-REBOL: View 2.7.8.3.1 http://WWW.REBOL.COM

Testing Rebol send/only


As you noted the To: field is empty and there aren't other fields.
The best way in order to create beautiful mail is to create your custom header:

myheader: make object! [
    X-REBOL: "View 2.7.8.3.1 http://WWW.REBOL.COM"
    Subject:   "My subject"
    From:   maxint@tiscali.it
    Return-Path: maxint@tiscali.it
    To: "only for the secret R3B community..."
    Date: to-idate now   ;we must set a correct RFC 822 standard format date or our emails will be identified as spam
    MIME-Version:   "1.0"
        ]
send/header/only [maxint@tiscali.it test@test.it]   "Testing send/only again..." myheader

And you'll obtain:

X-REBOL: View 2.7.8.3.1 http://WWW.REBOL.COM
Subject: My subject
From: maxint@tiscali.it
To: only for the secret R3B community...
Date: 06/03/2013 15.11 MIME-Version: 1.0

Testing send/only again...




Cool!