SendEmail.py

import email, smtplib, ssl

from email import encoders
from email.mime.base import MIMEBase
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText

# Add the email subject here
# Add the email body here
# Add the sender's email here
# Add the receiver's email here
# # Add the app password created using "https://myaccount.google.com/apppasswords" here

def send_email(
    filename, 
    receiver_email,
    sender_email = "",
    password = "",
    subject = "An email with attachment from Python",
    body = "This is an email with attachment sent from Python"
    ):
    # Create a multipart message and set headers
    message = MIMEMultipart()
    message["From"] = sender_email
    message["To"] = receiver_email
    message["Subject"] = subject
    #message["Bcc"] = receiver_email  # Recommended for mass emails

    # Add body to email
    message.attach(MIMEText(body, "plain"))

    # Add the name of the document here. Please make sure the document is in the same directory where your script is

    # Open PDF file in binary mode
    with open(filename, "rb") as attachment:
        # Add file as application/octet-stream
        # Email client can usually download this automatically as attachment
        part = MIMEBase("application", "octet-stream")
        part.set_payload(attachment.read())

    # Encode file in ASCII characters to send by email    
    encoders.encode_base64(part)

    # Add header as key/value pair to attachment part
    part.add_header(
        "Content-Disposition",
        f"attachment; filename= {filename}",
    )

    # Add attachment to message and convert message to string
    message.attach(part)
    text = message.as_string()

    with smtplib.SMTP("smtp.gmail.com", 587) as server:
        server.ehlo()
        server.starttls()
        server.ehlo()
        server.login(sender_email, password)
        server.sendmail(sender_email, receiver_email, text)