Thanks to folk at the Django chatroom, they advice me to google 'django gmail' and I discover a post at nathanostgard.com that show roughly how to do it. Here I'm going to extend a little on how to test it using shell.

1. Create a project, django-admin.py startproject gmail
2. Edit settings.py with code below:

   EMAIL_USE_TLS = True
   EMAIL_HOST = 'smtp.gmail.com'
   EMAIL_HOST_USER = 'youremail@gmail.com'
   EMAIL_HOST_PASSWORD = 'yourpassword'
   EMAIL_PORT = 587

3. Run interactive mode, python manage.py shell
4. Import the EmailMessage module,
   from django.core.mail import EmailMessage
5. Send the email,

   email = EmailMessage('Subject', 'Body', t=['mickeyckm@mangoorange.com'])
   email.save()

Hope it help someone Reference here.

(Image above is taken from Lifehacker)

Feeling bored with the current features offered by Gmail? Wanted to try something new from the Gmail Lab?

You got it. Recently, I read an article from Lifehacker that teach me how to enable it. Just copy and paste the link in your URL: https://mail.google.com/mail/?labs=1#settings

As the "Lab" word suggests that the features are still in experimental stage, hence, Google will not be responsible for any mishaps. I tried it, so far so good.

Have fun.