How to send an email with Python?

Sending an email using Python is easier than you might think. Whether you're automating alerts, sending reports, or building a mailing feature in your app, Python offers several ways to send emails.

One of the most common approaches is using the built-in smtplib library, which allows you to connect to an SMTP (Simple Mail Transfer Protocol) server and send messages programmatically. You’ll also need the email library to format your message properly.

Here's a basic example:

import smtplib
from email.message import EmailMessage
msg = EmailMessage()
msg['Subject'] = 'Test Email'
msg['From'] = 'you@example.com'
msg['To'] = 'recipient@example.com'
msg.set_content('This is a test email sent from Python!')
# Connect to the SMTP server
with smtplib.SMTP_SSL('smtp.gmail.com', 465) as smtp:
    smtp.login('you@example.com', 'yourpassword')
    smtp.send_message(msg)

Key Points:

•  smtplib is the core module used for SMTP connections.
  
•  EmailMessage from the email module helps you structure the content.
  
•  Use SMTP_SSL for secure email transfer (e.g., Gmail).
  
•  Make sure to enable "Less secure app access" or use App Passwords if you're using Gmail or similar providers.
  

Bonus Tip:

For more advanced use cases (HTML emails, attachments, templating), consider libraries like:

• yagmail – simplifies sending emails with Gmail.
  
• emails – for crafting and sending emails with templates.
  
• Always be cautious with login credentials—never hard-code them in scripts for production use. Use environment variables or secret managers instead.