Linuxのコマンドラインから外部SMTPサーバを指定してメール送信 - Qiita

#!/bin/sh SUBJECT=$1 BODY=$2 ( echo HELO my.domain.com; sleep 1; echo MAIL FROM: myself@my.domain.com; sleep 1; echo RCPT TO: my_mobile_phone@mobile.com; sleep 1; echo DATA; sleep 1; echo From: myself@my.domain.com; sleep 1; echo To: my_mobile_phone@mobile.com; sleep 1; echo Subject: ${SUBJECT}; sleep 1; echo ; sleep 1; echo ${BODY}; sleep 1; echo .; sleep 1; echo QUIT; sleep 1; ) | telnet 12.34.5