[Python] Emailer

import smtplib
from sys import argv
from email.mime.text import MIMEText
from email.header import Header

MAIL_SMTP = "smtp.email.com:465"
MAIL_ACCOUNT = "account@email.com"
MAIL_PASSWORD = "password"

if __name__ == "__main__":
    if len(argv) != 4:  # 4, т.к. 0  по умолчанию == "__main__"
        print("Usage: emailer.py [target] [header] [text]")
        exit(0)

    TARGET = argv[1]
    HEADER = argv[2]
    MESSAGE = argv[3]

    mail_message = MIMEText(MESSAGE, 'plain', 'utf-8')
    mail_message['Subject'] = Header(HEADER, 'utf-8')

    server = smtplib.SMTP_SSL(MAIL_SMTP)
    server.set_debuglevel(0)
    server.login(MAIL_ACCOUNT, MAIL_PASSWORD)
    server.sendmail(MAIL_ACCOUNT, TARGET, mail_message.as_string())
    server.quit()