.HP 5
.na
.B mhmail
-.RI [ addrs
-\&...]
+.RB [ \-to ]
+.RI addrs
+\&...
.RB [ \-attach
.IR file ]
.RB [ \-body
\&...]
.RB [ \-from
.IR addr ]
-.RB [ \-header\-field
-.IR name:body ]
+.RB [ \-headerfield
+.IR name:value ]
.RB [ \-subject
.IR subject ]
.RB [ \-resent ]
.RB [ \-send " | " \-nosend ]
.RB [ \-version ]
.RB [ \-help ]
+.PP
+.HP 5
+.B mhmail
+with no arguments is equivalent to
+.B inc
.ad
.SH DESCRIPTION
.B mhmail
.BR nmh .
This program is intended for the use of programs such as
.BR cron ,
-which expect to send mail automatically to various
-users. It is also used by various
+which expect to send mail automatically to various addresses. It is
+also used by various
.B nmh
commands to mail various
error notifications. Although
.PP
When invoked without arguments, it simply invokes
.B inc
-to incorporate new messages from the user's maildrop. When one or more users
-is specified, a message is read from the standard input and spooled to
-a temporary file.
+to incorporate new messages from the user's maildrop.
+.PP
+When one or more addresses are specified, a message is read from the
+standard input and spooled to a temporary file.
.B mhmail
then invokes
-.B post
-with the
-name of the temporary file as its argument to deliver the message to
-the specified user.
+.BR post ,
+by default, with the name of the temporary file as its argument to
+deliver the message to the specified address.
.PP
The
.B \-subject
\*(lq\*(rq to force an empty message.
.PP
Normally, addresses appearing as arguments are put in the \*(lqTo:\*(rq
-field. If the
+field. At least one such address is required when sending a message,
+i.e., if any other switches are supplied. If the
.B \-cc
switch is used, all addresses following it, even if there are
-intervening switches, are placed in the \*(lqcc:\*(rq field.
+intervening switches other than
+.BR \-to ,
+are placed in the \*(lqcc:\*(rq field. The optional
+.B \-to
+switch can appear in front of any addresses to signify their placement
+in the \*(lqTo:\*(rq field. The
+.B \-to
+and
+.B \-cc
+switches may be given multiple times.
.PP
By using
.B \-from
.B \-from
switch is used when sending,
.B mhmail
-will supply a \*(lqFrom:\*(rq header field using the sender's local mailbox.
+will supply a \*(lqFrom:\*(rq header field using the sender's local mailbox,
+see
+.I localmbox
+in
+.BR mh-format (5).
Naturally,
.B post
will fill\-in the \*(lqSender:\*(rq
header correctly.
.PP
The
-.B \-header\-field
-.I name:body
-switch adds a header field with the specified name and body to the
-message. There need not be a space after the colon that separates the
-name and body in the argument to this switch. It is usually best to
+.B \-headerfield
+.I name:value
+switch adds a header field with the specified name and value to the
+message. (The
+.I value
+is called the
+.I field body
+in RFC 2822, but that's too easily confused with the message body.)
+There need not be a space after the colon that separates the
+name and value in the argument to this switch. It is usually best to
enclose the argument in quotes to protect it from the shell. The
-.B \-header\-field
+.B \-headerfield
switch may be given multiple times to add multiple header fields,
for example,
.PP
.RS 5
.nf
mhmail -from sender@example.com \\
--header\-field 'MIME-Version:1.0' \\
--header\-field 'Content-Type:text/plain; charset=utf-8' \\
--header\-field 'Content-Transfer-Encoding:8bit' \\
+-headerfield 'MIME-Version:1.0' \\
+-headerfield 'Content-Type:text/plain; charset=utf-8' \\
+-headerfield 'Content-Transfer-Encoding:8bit' \\
recipient@example.com
.fi
.RE
.fi
.SH "SEE ALSO"
-dist(1), inc(1), post(8), send(1)
+dist(1), inc(1), mh-format(5), post(8), send(1)
.SH DEFAULTS
.nf
+.RB ` \-from "' defaults to sender's local mailbox (localmbox)"
+.RB ` \-profile "' is enabled by default only with " \-attach
.RB ` \-send '
.fi
-.RB ` \-profile' ,
-enabled by default only with
-.B \-attach
.SH CONTEXT
If