input: 
  def send_automated_email(recipient_emails: List[str]) -> None:
      """Send an automated email to each email address in the given list.
      >>> send_automated_email(["email1@example.com", "email2@example.com"])
      Email sent successfully.
      Email sent successfully.
      """
      sender_email = 'example@gmail.com'
      password = 'example_password'
  
      for email in recipient_emails:
          with smtplib.SMTP('smtp.gmail.com', 587) as server:
              server.ehlo()
              server.starttls()
              server.login(sender_email, password)
  
              subject = 'Automated Email from Program'
              message = 'Message body'
      
              server.sendmail(sender_email, email, 'Subject: ' + subject + '\n\n' + message)
              server.quit()
              print('Email sent successfully.')
  
output:     import smtplib