How to Send Emails with Python: Automate Your Inbox Today!

Pinterest LinkedIn Tumblr

Sending Emails with Python: A Step-by-Step Guide

write for us technology

Ever wished you could automate sending emails with Python? Whether you’re a programmer looking to boost your productivity or simply someone curious about Python’s capabilities, this article is for you. Let’s delve into the world of sending emails using Python’s smtplib library, making the process clear and accessible.

By following these steps, you’ll be equipped to craft Python programs that handle email delivery automatically. This can be particularly beneficial for repetitive tasks or scenarios where you need to send emails based on specific criteria.

This article dives into using Python to send emails. It covers the process of connecting to an email server, logging in with your credentials, and crafting emails for delivery.


  • Be aware of administrative limitations. Sending emails with Python might be restricted on corporate networks or work computers due to security concerns. In such cases, consult your IT department.
  • Understand that this guide won’t involve creating a full exercise due to the reliance on personal email addresses.

Sending Emails with smtplib

Python’s built-in smtplib library simplifies sending emails.

Here’s a breakdown of the steps involved:

  • Import smtplib: Begin by importing the library using import smtplib.
  • Create an SMTP Object: Establish a connection to your email server’s domain name. For Gmail, use smtp_object = smtplib.SMTP(‘’, 587). You can try port 465 if 587 fails.
  • Initiate TLS Encryption (Optional): If using port 587, use smtp_object.starttls() to encrypt email communication.
  • Login with Email and App Password: Employ smtp_object.login(email, password) to log in. Remember to use an app password generated specifically for Python scripts (not your regular Gmail password).

Generating App Passwords

For Gmail users, creating an app password is essential for security:

Crafting the Email

Here’s how to construct the email content within your Python script:

  • Define Email Components: Assign variables for the sender’s email address (from_address), recipient’s email address (to_address), subject line (subject), and message body (body). You can use input() to prompt the user for these.
  • Format the Message: Construct the message string by combining the subject line and body with a specific format: “Subject: ” + subject + “\n\n” + body. The new line (\n\n) indicates the separation between the subject and body.

Sending the Email

  • Send the Email: Use smtp_object.sendmail(from_address, to_address, message) to deliver the email.
  • Close the Connection: Employ smtp_object.quit() to terminate the connection to the email server.

Verifying Delivery

  • Log in to your email account’s inbox to confirm successful email delivery.

Exploring Received Emails with Python

This article dives into exploring your inbox using Python libraries. By leveraging the imaplib and email libraries, you can retrieve and process information from your received emails.

Essential Libraries

  • imaplib: This library facilitates interaction with email servers using the IMAP protocol.
  • email: This built-in Python library aids in parsing email messages.

Connecting to Your Email Server

  • Import imaplib: Begin by importing the imaplib library.
  • Create an IMAP4_SSL instance: Establish a connection to your email server using IMAP4_SSL. Provide the IMAP server address (e.g., for Gmail) as an argument.
  • Login with email and password: Utilize login to authenticate with your email address and password. Remember, for Gmail, you’ll likely need an app password.

Selecting Your Inbox

  • List available folders: Employ list to view all accessible folders on the server, including your inbox.
  • Select the inbox: Use select to choose your inbox folder (typically named “inbox”).

Searching for Emails

  • Craft search criteria: Employ the IMAP search syntax to specify the emails you want to retrieve. This syntax enables you to search by various criteria like sender, recipient, subject line, date, and more.
  • Execute the search: Utilize search to execute the search query. It returns a list of unique IDs corresponding to the emails that match your criteria.

Fetching Email Data

  • Specify email ID: Select a particular email ID from the search results.
  • Fetch the email: Use fetch to retrieve the complete email data associated with the chosen ID. Specify the RFC822 protocol for fetching the email.

Parsing the Email

  • Process the email data: The fetched email data is in a raw format.
  • Extract the message: To parse the email message, leverage the email library. The message_from_string function from the email library helps extract the message from the raw email data.
  • Iterate through parts: Use the walk method to iterate through the various parts of the email (e.g., headers, body).
  • Identify content type: Employ get_content_type to determine the content type of each part (e.g., text/plain, text/html).
  • Extract the body: If the content type is text/plain, use get_payload(decode=True) to extract the plain text body of the email.

Sending Emails with Python: Solutions and Challenges

Connecting to Email ServerUse smtplib library to create an SMTP object for your email server (e.g., Gmail).
AuthenticationUse app passwords generated specifically for Python scripts (not your regular email password) for secure login.
EncryptionUse starttls() method for TLS encryption when connecting on port 587.
Building the EmailConstruct the email message by combining subject line, body, and formatting with \n for separation.
Sending the EmailUse sendmail() method with sender, recipient, and message string.
Limited Functionalitysmtplib offers basic functionalities. Consider advanced libraries for complex email formatting (HTML) or attachments.
Security ConcernsSending emails from untrusted sources might be blocked. Ensure proper authentication and avoid sending spam.
Administrative RestrictionsCorporate networks or work computers might restrict email sending with Python due to security policies. Consult IT if needed.
App Password ManagementApp passwords require careful management. Avoid storing them in plain text within your scripts.


By following these steps and incorporating the imaplib and email libraries, you can construct Python programs to programmatically interact with your received emails and process the retrieved information. Remember that handling HTML content types and more complex email structures might require additional techniques.

The power of Python for email automation is now at your fingertips! With the knowledge you’ve gained, you can create Python scripts that streamline your communication and free up valuable time. Remember, while this article provides a solid foundation, more intricate email structures might require additional techniques. So, keep exploring and experimenting to unlock the full potential of Python for your email needs!

Hi! I'm Sugashini Yogesh, an aspiring Technical Content Writer. *I'm passionate about making complex tech understandable.* Whether it's web apps, mobile development, or the world of DevOps, I love turning technical jargon into clear and concise instructions. *I'm a quick learner with a knack for picking up new technologies.* In my free time, I enjoy building small applications using the latest JavaScript libraries. My background in blogging has honed my writing and research skills. *Let's chat about the exciting world of tech!* I'm eager to learn and contribute to clear, user-friendly content.

Write A Comment