send-email-python3-gmail.py

# Read more about setting it up:
# https://medium.com/@ljmocic/send-an-email-using-python-and-gmail-4ebc980eae9b

import smtplib
from email.mime.text import MIMEText

EMAIL = ''
APP_PASSWORD = ''

RECEIVER = ''
SUBJECT = ''
MESSAGE_TEXT = ''

message = MIMEText(MESSAGE_TEXT)
message['From'] = EMAIL
message['To'] = RECEIVER
message['Subject'] = SUBJECT

try:
    server = smtplib.SMTP_SSL('smtp.gmail.com', 465)
    server.ehlo()
    server.login(EMAIL, APP_PASSWORD)
    server.sendmail(EMAIL, RECEIVER, message.as_string())
    server.close()

    print('Email sent!')
except Exception as e:
    print(e)
    print('Something went wrong...')

Not working

It's actually working, Google changed auth for these kinds of scripts.
You can simply generate APP_PASSWORD in order to be able to send mails again.

You can find more on how to do it here: https://link.medium.com/6LbSmeu6g5