Why Does My Python Gmail Email Script Show 'SMTP AUTH Extension Not Supported,' and How Can I Fix It?

Sending Emails with Gmail Using Python: Troubleshooting "SMTP AUTH Extension Not Supported" Error

When attempting to send emails via Gmail using Python, you may encounter the following error:

SMTPException: SMTP AUTH extension not supported by server.

To resolve this issue, we need to use the SMTP_SSL class and establish a secure connection instead of the default SMTP. Follow these steps:

1. Import the smtplib module.
2. Set up your email details: user (your Gmail address), pwd (your password), recipient (recipient's email address), subject (email subject), and body (email content).

3. Create an SMTP_SSL object (Port 465):

   server_ssl = smtplib.SMTP_SSL("smtp.gmail.com", 465)

4. Call ehlo() to initiate the session.

5. Login using your Gmail credentials:

   server_ssl.login(user, pwd)

6. Send the email message:

   server_ssl.sendmail(user, recipient, message)

7. Close the connection:

   server_ssl.close()

Here's an updated example using SMTP_SSL:

import smtplib

def send_email(user, pwd, recipient, subject, body):
    # ... Same as before ...

    # Use SMTP_SSL instead of SMTP
    server_ssl = smtplib.SMTP_SSL("smtp.gmail.com", 465)
    server_ssl.ehlo()
    server_ssl.login(user, pwd)
    # ... Same as before ...

By using SMTP_SSL and port 465, you'll establish a secure connection and avoid the error "SMTP AUTH extension not supported by server."

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