#!/bin/sh

function checkStatus {
  expect=250
  if [ $# -eq 3 ] ; then
    expect="${3}"
  fi
  if [ $1 -ne $expect ] ; then
    echo "Error: ${2}"
    exit
  fi
}

MyHost=`hostname`

read -p "Enter your mail host: " MailHost
MailPort=25

read -p "From: " FromAddr

read -p "To: " ToAddr

read -p "Subject: " Subject

read -p "Message: " Message

exec 3<>/dev/tcp/${MailHost}/${MailPort}

read -u 3 sts line
checkStatus "${sts}" "${line}" 220

echo "HELO ${MyHost}" >&3

read -u 3 sts line
checkStatus "$sts" "$line"

echo "MAIL FROM: ${FromAddr}" >&3

read -u 3 sts line
checkStatus "$sts" "$line"

echo "RCPT TO: ${ToAddr}" >&3

read -u 3 sts line
checkStatus "$sts" "$line"

echo "DATA" >&3

read -u 3 sts line
checkStatus "$sts" "$line" 354

echo "Subject: ${Subject}" >&3
echo "${Message}" >&3
echo "." >&3

read -u 3 sts line
checkStatus "$sts" "$line"

#!/bin/bash
# Use "host -t mx yourispdomain" to find out yourispmailserver
exec 1<>/dev/tcp/yourispmailserver/25
a=$(cat <<"MAILEND"
HELO local.domain.name
MAIL FROM: <me@local.domain.name>
RCPT TO: <you@local.domain.name>
DATA
From: me@local.domain.name
To: you@local.domain.name
Subject: test
send your orders for pizza to the administrator.
.
QUIT
.
MAILEND
)
IFS='
'
declare -a b=($a)
for x in "${b[@]}"
 do
   echo $x
   sleep 1
 done

#/bin/bash

FROM='from@test.com'
TO='to@test.com'
SUBJECT='This is a test message'

BODY="This is a test mail message body.
Hi there.
"

printf "From: <%s>nTo: <%s>nSubject: %snn%s" "$FROM" "$TO" "$SUBJECT" "$BODY" | sendmail -f "$FROM"

SERVER="smtp.company.com"
FROM="sender@company.com"
TO="recepient@company.com"
SUBJ="Some subject"
MESSAGE="Some message"
CHARSET="utf-8"

sendemail -f $FROM -t $TO -u $SUBJ -s $SERVER -m $MESSAGE -v -o message-charset=$CHARSET