old_contents: from django.core.mail import EmailMessage
  from django.template import loader, Context
  from django.conf import settings
  
  
  def send_email(to_list, subject, message_template, message_context):
      message_context.update({
          'BASE_URL': settings.BASE_URL
      })
      context = Context(message_context)
      message = loader.get_template(message_template).render(context)
      sender = settings.DEFAULT_FROM_EMAIL
      msg = EmailMessage(subject, message, sender, to_list)
      msg.content_subtype = "html"
      return msg.send(fail_silently=True)
  
new_contents: from django.core.mail import EmailMessage
  from django.template import loader, Context
  from django.conf import settings
  
  
  def send_email(to_list, subject, message_template, message_context):
      message_context.update({
          'BASE_URL': settings.BASE_URL
      })
      # Turn a single email into a list of one element
      if isinstance(to_list, str) or isinstance(to_list, unicode):
          to_list = [to_list, ]
      context = Context(message_context)
      message = loader.get_template(message_template).render(context)
      sender = settings.DEFAULT_FROM_EMAIL
      msg = EmailMessage(subject, message, sender, to_list)
      msg.content_subtype = "html"
      return msg.send(fail_silently=True)
  
subject: Allow a single email as the to email field