Python · Tools

Send Automated Emails with Python

Need to send reminders, reports or notifications automatically? Python can do it in a few lines. Here is a clean, reusable script for sending emails — including with an SMTP service like Gmail.

The script

Python’s built-in smtplib and email modules are all you need — no extra packages.

import smtplib


from email.message import EmailMessage





SMTP_HOST = "smtp.gmail.com"


SMTP_PORT = 465


USERNAME = ""


PASSWORD = "your-app-password"   # use an App Password, not your real password





def send_email(to, subject, body):


    msg = EmailMessage()


    msg = USERNAME


    msg = to


    msg = subject


    msg.set_content(body)





    with smtplib.SMTP_SSL(SMTP_HOST, SMTP_PORT) as server:


        server.login(USERNAME, PASSWORD)


        server.send_message(msg)


    print(f"Sent to {to}")





if __name__ == "__main__":


    send_email(


        to="",


        subject="Your weekly report",


        body="Hi,\n\nHere is your update for this week.\n\nThanks!",


    )

Important: use an App Password

• For Gmail, turn on 2-Step Verification, then create an App Password and use that instead of your normal password.
• Never hard-code real passwords in shared code — load them from an environment variable or a secrets file.

Take it further

• Loop over a list to send personalized emails to many people.
• Attach files (reports, invoices) with msg.add_attachment().
• Schedule it to run daily or weekly with cron or Task Scheduler.

Want a real notification system?

From automated client reports to order confirmations and alerts, I build email and automation systems that just work — reliably, on schedule.