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<H3><A NAME="Heading15"></A><FONT COLOR="#000077">Deleting and Undeleting Messages with <I>mail</I>
</FONT></H3>
<P>To delete a message from a file of messages you’re reading, you use the <TT>d</TT> command. If you quit the <TT>mail</TT> program by using <TT>q</TT>, any messages you deleted with the <TT>d</TT> command are removed from the file.</P>
<P>You use the <TT>d</TT> or <TT>delete</TT> command to mark messages for deletion when you use <TT>mail</TT> to read your e-mail. If you then quit the program with <TT>q</TT>, the marked messages are removed from your mailbox. Unless you’ve saved them, they’re gone for good. For some messages, deleting without saving them is a very good idea.</P>
<P>To delete the current message, type <TT><B>d</B></TT> and press <Return>. You can also specify a message list.</P>
<P>If you mark a message or a group of messages to be deleted, you can change your mind and undelete the message or messages by using the <TT>u</TT> command. You must use the <TT>u</TT> command before you enter <TT>q</TT> to quit; when you enter <TT>q</TT>, the messages are gone for good. Use the <TT>u</TT> or <TT>undelete</TT> command in the same way you use <TT>d</TT> or <TT>delete</TT>.</P>
<BLOCKQUOTE>
<P><FONT SIZE="-1"><HR><B>TIP: </B>To undelete all the messages you marked for deletion, enter <TT><B>u *</B></TT> at the <TT>?</TT> prompt.<HR></FONT>
</BLOCKQUOTE>
<H3><A NAME="Heading16"></A><FONT COLOR="#000077">Replying to E-Mail with <I>mail</I>
</FONT></H3>
<P>To reply to e-mail, use the address specified in the <TT>Reply-To</TT> header field. If that field isn’t present, use the information in the <TT>Return-Path</TT> header field. Following are partial headers of two messages; one has both header fields, and the other has only the <TT>Return-Path</TT> header field. The pertinent fields are in bold in each example.</P>
<!-- CODE //-->
<PRE>
<I>Message 1:</I>
From server@malte.abc.com Mon Nov 8 18:31 EST 1993
Received: from MALTE.ABC.COM by s850.mwc.edu with SMTP
<B>Return-Path: <server@matle.ams.com></B>
Date: Mon, 8 Nov 93 18:17:15 -0500
Comment: From the DuJour List
Originator: dujour@mathe.abc.com
Errors-To: asap@can.org
<B>Reply-To: <dujour@mathe.abc.com></B>
Sender: dujour@mathe.abc.com
<I>Message 2:</I>
From jones Fri, Jan 7 13:22 EST 1994
Received: by your.system.com
Date: Fri, 7 Jan 1994 13:22:01 -0500
From: Carol Jones <jones>
<B>Return-Path: <jones></B>
To: aborat, lynn, oackerm, bkorn
Subject: Draft Report
</PRE>
<!-- END CODE //-->
<P>To reply to the first message, use the <TT>Reply-To</TT> address dujour@mathe.abc.com. Note that the <TT>Reply-To</TT> and <TT>Return-Path</TT> fields are different. In the second example, use jones to respond to the sender of the message.</P>
<BLOCKQUOTE>
<P><FONT SIZE="-1"><HR><B>NOTE: </B>Always use the <TT>Reply-To</TT> address if it’s included in the header because it represents the specific address of the sender. When the <TT>Reply-To</TT> address isn’t available, the <TT>Return-Path</TT> address usually provides an adequate address back to the sender.<HR></FONT>
</BLOCKQUOTE>
<P>You can let the <TT>mail</TT> program determine the address to use to reply to an electronic mail message. To do this, use either of the following commands:</P>
<TABLE><TR>
<TD><TT>R</TT>
<TD>Addresses a reply to the sender of the message
<TR>
<TD><TT>r</TT>
<TD>Addresses a reply to the sender and all recipients of an e-mail message
</TABLE>
<P>With either command, you can specify a message list, as explained earlier in this chapter. Otherwise, the <TT>R</TT> or <TT>r</TT> command applies to the current message.</P>
<P>The following partial header shows how to use these two commands. This header is excerpted from a message from Carol Jones, in which she asks a group to comment on a draft of a report she has prepared:</P>
<!-- CODE SNIP //-->
<PRE>
From jonesFri, Jan 7 13:22 EST 1994
Received: by your.system.com
Date: Fri, 7 Jan 1994 13:22:01 -0500
From: Carol Jones <jones>
Return-Path: <jones>
To: aborat, lynn, oackerm, bkorn
Subject: Draft Report
</PRE>
<!-- END CODE SNIP //-->
<P>To respond to jones only, enter <TT><B>R</B></TT> at the <TT>?</TT> prompt. You see the following response:</P>
<!-- CODE SNIP //-->
<PRE>
To: jones
Subject: Re: Draft Report
</PRE>
<!-- END CODE SNIP //-->
<P>The <TT>To</TT> line tells you that the reply is going to one person. The <TT>Subject</TT> header indicates that the message is a reply to the one originally sent.</P>
<P>To make comments for everyone on the distribution list to see, enter <TT>r</TT> at the <TT>?</TT> prompt. You see the following response lines:</P>
<!-- CODE SNIP //-->
<PRE>
To: jones, aborat, lynn, oackerm, bkorn
Subject: Re: Draft Report
</PRE>
<!-- END CODE SNIP //-->
<P>The <TT>To</TT> line tells you that the reply is going to everyone on the original distribution list, as well as the author. The <TT>Subject</TT> header indicates that the message is a reply to the one originally sent.</P>
<P>From here on, you enter your message in the manner described earlier in the section “Sending E-Mail with <TT>mail</TT>.”</P>
<BLOCKQUOTE>
<P><FONT SIZE="-1"><HR><B>CAUTION: </B><BR>Be careful about using <TT>r</TT> to reply to a message. Whatever you send is sent to everyone who got a copy of the original message. Because Linux is case-sensitive and most people aren’t used to typing capital letters as commands, it’s a very common mistake and can sometimes be embarrassing.<HR></FONT>
</BLOCKQUOTE>
<BLOCKQUOTE>
<P><FONT SIZE="-1"><HR><B>NOTE: </B>Think about what you write and who will read your message before you send a reply. Being sarcastic or scathing doesn’t work very well with e-mail—you usually end up sounding like a bully. Using e-mail isn’t the same as talking with someone: You don’t get a chance to see or hear the person’s reactions, and he or she doesn’t get a chance to see or hear you, either. When you use e-mail, it’s a lot easier and more effective to be polite and direct.
<P>You can see how easy it is to forward mail; as soon as you send something to one person, you can never tell where the message will end up or how many people will see it. Think, and be considerate.<HR></FONT>
</BLOCKQUOTE>
</P>
<BLOCKQUOTE>
<P><FONT SIZE="-1"><HR><B>See</B> “Lack of Visual Reference,” <B>p. 662</B><HR></FONT>
</BLOCKQUOTE>
<H3><A NAME="Heading17"></A><FONT COLOR="#000077">Routing Mail to Others</FONT></H3>
<P>E-mail is distributed by addresses. Tasks such as forwarding a message, sending copies (cc:) of a message, creating aliases or simpler forms of addresses, and creating mailing lists all involve manipulating addresses. You don’t have to do the manipulation directly—the <TT>mail</TT> program has these capabilities built in.</P><P><BR></P>
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