Introduction to Python Programming (Copy 1)

Lab: Automating Email

Objective

Generate sample files (PDF, image, chart).
Configure Gmail for sending emails with App Passwords.
Run the provided Python script to send:
1. Weekly Sales Report with attachments
2. Product Catalog with inline image
3. Personalized updates to multiple contacts

Step 1: Generate Required Files

1. Weekly Report (PDF)

Create dummy pdf file

2. Chart Image

`chart.png`

3. Product Image

(`product.jpg`)

Use Paint to create the above two files

Step 2: Folder Structure

Your Folder structure should reflect this

Lab 9 folder structure

Step 3: Configure Gmail

Go to your Google Account: https://myaccount.google.com/security
Enable 2-Step Verification in Google Account.
Go to your Google Account: https://myaccount.google.com/apppasswords
Generate an App Password for “Mail → Other (Python Script)”.
Use that password in your script when prompted.

Step 5: Run the Email Script

Now run your main script:

import os
import smtplib
import ssl
from email.message import EmailMessage
from email.mime.image import MIMEImage
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
import getpass


# Prompt for credentials
sender = input("Enter your email address: ")
password = getpass.getpass("Enter your email password: ")

# Create a secure SSL context
context = ssl.create_default_context()


# -------------------- Weekly Sales Report --------------------
msg = EmailMessage()
msg["Subject"] = "Weekly Sales Report"
msg["From"] = sender
msg["To"] = "team@example.com"
msg.set_content("""
Hello Team,

Please find attached the weekly sales report.

Kind regards,  
Your Automation Script
""")

with open("reports/weekly_report.pdf", "rb") as f:
    file_data = f.read()
    file_name = os.path.basename("reports/weekly_report.pdf")
msg.add_attachment(file_data, maintype="application", subtype="pdf", filename=file_name)

with open("chart.png", "rb") as img:
    img_data = img.read()
msg.add_attachment(img_data, maintype="image", subtype="png", filename="chart.png")

with smtplib.SMTP_SSL("smtp.gmail.com", 465, context=context) as server:
    server.login(sender, password)
    server.send_message(msg)
    print("Weekly Sales Report Email sent successfully")


# -------------------- Product Catalog with Embedded Image --------------------
sender_email = sender
receiver_email = "customer@example.com"

msg2 = MIMEMultipart('related')
msg2['Subject'] = "Product Catalog"
msg2['From'] = sender_email
msg2['To'] = receiver_email

html_content = """
<html>
  <body>
    <h1>New Product Launch</h1>
    <p>Check out our latest product:</p>
    <img src="cid:prod_image">
  </body>
</html>
"""
html_part = MIMEText(html_content, 'html')
msg2.attach(html_part)

with open("product.jpg", "rb") as img:
    img_data = img.read()
image_part = MIMEImage(img_data, _subtype="jpg")
image_part.add_header('Content-ID', '<prod_image>')
msg2.attach(image_part)

with smtplib.SMTP_SSL("smtp.gmail.com", 465, context=context) as server:
    server.login(sender, password)
    server.send_message(msg2)
    print("Product Catalog Email sent successfully")


# -------------------- Personalized Updates --------------------
contacts = [
    {"email": "alice@example.com", "name": "Alice"},
    {"email": "bob@example.com", "name": "Bob"}
]

for person in contacts:
    msg3 = EmailMessage()
    msg3["Subject"] = "Personalized Update"
    msg3["From"] = sender
    msg3["To"] = person["email"]
    msg3.set_content(f"""
Hi {person['name']},

Here is your personalised update for this week.

Regards,  
Automation Bot
""")

    with smtplib.SMTP_SSL("smtp.gmail.com", 465, context=context) as server:
        server.login(sender, password)
        server.send_message(msg3)
        print(f"Sent email to {person['name']}")


# -------------------- Duplicate Send (Email + Chart Attachment) --------------------
with smtplib.SMTP_SSL("smtp.gmail.com", 465, context=context) as server:
    server.login(sender, password)
    server.send_message(msg)
    print("Email sent successfully")

with open("chart.png", "rb") as img:
    img_data = img.read()
msg.add_attachment(img_data, maintype="image", subtype="png", filename="chart.png")


# -------------------- Product Catalog (Again with Embedded Image) --------------------
msg = MIMEMultipart('related')
msg['Subject'] = "Product Catalog"
msg['From'] = sender_email
msg['To'] = receiver_email

html_content = """
<html>
  <body>
    <h1>New Product Launch</h1>
    <p>Check out our latest product:</p>
    <img src="cid:prod_image">
  </body>
</html>
"""
html_part = MIMEText(html_content, 'html')
msg.attach(html_part)

with open("product.jpg", "rb") as img:
    img_data = img.read()
image_part = MIMEImage(img_data, _subtype="jpg")
image_part.add_header('Content-ID', '<prod_image>')
msg.attach(image_part)


# -------------------- Personalized Updates (Again) --------------------
contacts = [
    {"email": "alice@example.com", "name": "Alice"},
    {"email": "bob@example.com", "name": "Bob"}
]

for person in contacts:
    msg = MIMEMultipart("alternative")
    msg["Subject"] = "Personalized Update"
    msg["From"] = sender
    msg["To"] = person["email"]

    text_content = f"""
Hi {person['name']},

Here is your personalised update for this week.

Regards,  
Automation Bot
"""
    msg.attach(MIMEText(text_content, "plain"))

    with smtplib.SMTP_SSL("smtp.gmail.com", 465, context=context) as server:
        server.login(sender, password)
        server.send_message(msg)
        print(f"Sent email to {person['name']}")

You should see outputs like:

At the end of this lab, students will have:

Created PDF, chart, and image files.
Sent emails with attachments and inline images.
Sent personalized emails to multiple contacts.