Simple python script that sends Gmail emails!

email_sender.py

import os
import smtplib, ssl
from email.mime.text import MIMEText

import os


def get_credentials():
    """
    Get the credentials from the environment variables.
    """
    return {
        "username": os.environ["GMAIL_USERNAME"],
        "password": os.environ["GMAIL_PASSWORD"],
    }


def create_server():
    """
    Create a server to send Gmail emails.
    """
    credentials = get_credentials()
    port = 465  # For SSL
    smtp_server = "smtp.gmail.com"

    sender_email = credentials["username"]
    password = credentials["password"]

    context = ssl.create_default_context()
    server = smtplib.SMTP_SSL(smtp_server, port, context=context)
    server.login(sender_email, password)
    return server


def create_email_message(sender, to_receivers, subject, body):
    """
    Create an email message.

    Arguments:
    to_email -- the email address to send to
    subject -- the subject of the email
    body -- the body of the email
    """
    message = MIMEText(body, "html")
    message["Subject"] = subject
    message["From"] = sender
    message["To"] = ",".join(to_receivers)

    return message


def send_with_attachment(to_receivers, subject, body, attachment_path):
    """
    Send an email with an attachment.

    Arguments:
    to_email -- the email address to send to
    subject -- the subject of the email
    body -- the body of the email
    attachment_path -- the path to the attachment
    """
    credentials = get_credentials()
    sender_email = credentials["username"]

    message = create_email_message(sender_email, to_receivers, subject, body)

    with open(attachment_path, "rb") as file:
        attachment = MIMEText(file.read())
        attachment.add_header(
            "Content-Disposition",
            "attachment",
            filename=os.path.basename(attachment_path),
        )
        message.attach(attachment)

    server = create_server()
    server.sendmail(sender_email, to_receivers, message.as_string())
    server.close()


def send_email(to_receivers, subject, body):
    """
    Send an email.

    Arguments:
    to_email -- the email address to send to
    subject -- the subject of the email
    body -- the body of the email
    """
    credentials = get_credentials()
    sender_email = credentials["username"]

    message = create_email_message(sender_email, to_receivers, subject, body)

    server = create_server()

    server.sendmail(sender_email, to_receivers, message.as_string())
    server.close()


receivers = ["test@gmail.com"]
subject = "Subject line goes here"
body = "Test send email with gmail Account"
attachment_path = "email_attachment.txt"

send_email(receivers, subject, body)
# send_with_attachment(receivers, subject, body, attachment_path)

print("Email sent!")


# To run:
# export GMAIL_USERNAME="gmail_email"
# export GMAIL_PASSWORD="email_password"
# python3 sender_email.py

# This will display a message 'Email sent!'