smail

#!/bin/bash
set -e      #exit on error

SUBJECT=
TO=
FROM=
REPLYTO=
CC=
BCC=
BODY=
CONTENTTYPE="text/plain"
ATTACH=()

BOUNDARY=`date +%s|md5sum`
BOUNDARY="BOUNDARY${BOUNDARY:0:32}"
TMPFILE=`mktemp`

function usage {
  echo "Usage: $0 -s|--subject subject -t|--to address [-f|--from address] [-r|--replyto from] [-b|--body stdin] [--cc address] [--bcc address] [-a|--attach file] [--contenttype|-c text/plain]"
}

function log {
  echo "`date +%Y%m%d-%H:%M:%S`  - $1"
}

function doit {
  log '--- STARTING ---'

  (
  [ -n "$FROM" ] && echo "From: $FROM" && echo "Reply-To: $REPLYTO"
  echo "To: $TO"
  [ -n "$CC" ] && echo "Cc: $CC"
  [ -n "$BCC" ] && echo "Bcc: $BCC"
  echo "MIME-Version: 1.0"
  echo "Content-Type: multipart/mixed; boundary=\"$BOUNDARY\""
  echo "Subject: $SUBJECT"
  echo ""
  echo "--$BOUNDARY"
  echo "Content-Type: $CONTENTTYPE"
  echo ""
  echo "$BODY"
  echo ""

  #Parsing Multiple -a|--attach Attachments
  for f in "${ATTACH[@]}"; do 
    FILENAME=`basename $f`;
    cat $f | uuencode --base64 $FILENAME > $TMPFILE;
    sed -i -e '1,1d' -e '$d' $TMPFILE   #removes first & last lines from $TMP
    DATA=`cat $TMPFILE`
    
    echo "--$BOUNDARY"
    echo "Content-Type: `mimetype -b $f`; Name=\"$FILENAME\""
    echo "Content-Transfer-Encoding: base64"
    echo "Content-Disposition: attachment; filename=\"$FILENAME\";";
    echo ""
    echo "$DATA"
    echo ""
  done

  echo ""
  echo "--$BOUNDARY"
  echo ""

  ) | sendmail -t
  #) | tee

  log "--- DONE ---"
}

while [ "$1" ]; do
	case "$1" in
		-t|--to)                          TO="$2; $TO"; shift ;;
		-f|--from)                        FROM="$2"; shift ;;
		--cc)                             CC="$2; $CC"; shift ;;
		--bcc)                            BCC="$2; $BCC"; shift ;;
		-s|--subject)                     SUBJECT="$2"; shift ;;
		-c|--contenttype)                 CONTENTTYPE="$2"; shift ;;
    -a|--attach)                      ATTACH=(${ATTACH[@]-} "$2"); shift ;;
    
		-b|--body)                        BODY="$BODY
$2"; shift ;;

    #if option is unknown, append it to subject
    *)                                SUBJECT="$SUBJECT $1" ;;
    
	esac
	shift
done

#Global Variables
[ -n "$FROM" ] || FROM=$SMAILFROM

#Mandatory
[ -z "$SUBJECT" ] || [ -z "$TO" ] && usage && exit 1

#Default Values
[ -n "$REPLYTO" ] || REPLYTO="$FROM"

while read -t 1 B; do
 BODY="$BODY
$B"
done

doit