# How to use
# Make sure you install curl. By running curl -v to test it.
# Provide your Gmail username and password and who you need to send email to.
# For password it is not your Gmail password but it is App passwords https://support.google.com/mail/answer/185833. Please go to your Gmail account setting and create it.
# chmod -R 777 send-email-gmail.com
# ./send-email-gmail.com
# Your Gmail username (email) (Required)
SENDER_GMAIL_USERNAME=
# Your App password (Required)
SENDER_GMAIL_PASSWORD=
# Email you want to send to (Required)
SEND_TO=
# Name of you want to send to (Optional)
SEND_TO_NAME=
# Create temporary email_temp.html for use it to store email html format and some information.
# It's use internet message format as descript in RFC5322 https://tools.ietf.org/html/rfc5322
echo "To: $SEND_TO_NAME <$SEND_TO>" >> email_temp.html
echo "Subject: Send HTML5 Email by Shell Script and Curl" >> email_temp.html
echo "Content-Type: text/html; charset=\"utf8\"" >> email_temp.html
# Add Some HTML5 Template Here
cat << EOF | cat >> email_temp.html
Email Title
Hello!
You can embedded image. like this
Or you can use CSS (Inline and same page CSS only)
Contact Me.
EOF
curl --mail-from "$SEND_TO" --mail-rcpt "$SEND_TO" --ssl -u "$SENDER_GMAIL_USERNAME:$SENDER_GMAIL_PASSWORD" -T "email_temp.html" -k --anyauth smtps://smtp.gmail.com:465
# Clean Up email_temp.html
rm email_temp.html