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#!/bin/bash
# ref: https://stackoverflow.com/questions/9998710/is-it-possible-to-send-mails-by-bash-script-via-smtp
# Use "host -t mx host" to find out mail server
set -e
MAIL_SERVER=smtp.gmail.com
PORT=465
MAIL_FROM=typebrook@gmail.com
RCPT_TO=typebrook@gmail.com
send_message_line_by_line() {
while read line; do
echo $line >/dev/tty
echo $line
sleep 1
done | openssl s_client -connect $MAIL_SERVER:$PORT -crlf
}
# 1. openssl do RENEGOTIATING when input starts with R, so use "rcpt to:" instead of "RCPT TO:"
# 2. End mail with an empty line, and followed by '.' and 'QUIT'
cat <<MAILEND | send_message_line_by_line
HELO $MAIL_SERVER
AUTH LOGIN
$(echo $MAIL_FROM | base64)
$(pass google/imap_for_typebrook | base64)
MAIL FROM: <$MAIL_FROM>
rcpt to: <$RCPT_TO>
DATA
Subject: $(date) test mail from bash
Another test mail
.
QUIT
MAILEND
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