Send Email with SMTP using Python

sendmail.py

#!/usr/bin/python
# -*- coding: UTF-8 -*-

import smtplib
from email.mime.text import MIMEText
from email.utils import formataddr

mail_host = "smpt.xxxx.com"
mail_user = "sender@xxxx.com"
mail_pass = "password"
mail_port = PORT_NUMBER

receiver = 'receiver@xxxx.com'

def mail():
    ret = True
    try:
        msg = MIMEText('Instance has been terminated...', 'plain', 'utf-8')
        msg['From'] = formataddr(["Notification Bot", mail_user])
        msg['To'] = formataddr(["FK", receiver])
        msg['Subject'] = "Terminated Instance Notification"

        server=smtplib.SMTP_SSL(mail_host, mail_port)
        server.login(mail_user, mail_pass)
        server.sendmail(mail_user, [receiver,], msg.as_string())
        server.quit()
    except Exception:
        ret = False
    return ret

ret = mail()
if ret:
    print("Success!")
else:
    print("Failed!")