title: Formatted excel attachment in UNIX sendmail
body: <p>Is it possible to send an excel attachment having some rows in red colored highlighted?</p>
  
  <p>Currently I am using below coding format(similar) for sending plan excel attachment:</p>
  
  <pre><code>(
   echo "From: $MAILFROM"
   echo "To: $MAILTO"
   echo "Subject: $SUBJECT"
   echo "MIME-Version: 1.0"
   echo "Content-Type: multipart/mixed; boundary=\"-$MAILPART\""
   echo "---$MAILPART"
   echo "Content-Type: text/html"
   echo "Content-Disposition: inline"
   cat $BODY
   echo "---$MAILPART"
   echo 'Content-Type: application/pdf; name="'$(basename $ATTACH)'"'
   echo "Content-Transfer-Encoding: base64"
   echo 'Content-Disposition: attachment; filename="'$(basename $ATTACH)'"'
   uuencode -m $ATTACH $(basename $ATTACH)
   echo "---$MAILPART--"
  ) | /usr/sbin/sendmail $MAILTO
  </code></pre>
  
  <p>Is there any way to add something in above code to achieve the same?</p>