#!/bin/bash

mailer () {
if ! [[ -z "$3" ]]; then
    local mailfrom="From: $3 <christian@betz.cc>"
fi
if ! [[ -z "$4" ]]; then
    local mailto="$4"
elif [[ -z "$mailto" ]]; then
    local mailto="christian@betz.cc"
fi

echo -e "$1" | mailx -s "$2" --append="$mailfrom" $mailto &>/dev/null
}