#!/bin/bash

if [ -z "$1" ]; then
  echo "Usage: $0 [-d] sender@email and grep options"
  exit 0
fi

if [ "$1" = "-d" ]; then
  shift 1
  mailq | tr -d '*' | grep "$@" | cut -d " " -f 1 | postsuper -d -
else
  mailq | tr -d '*' | grep "$@"
fi