title: sending email templates in with django
body: <p>I want to send an email with a template like this.</p>
  
  <pre><code>{% extends "base.html" %}
  
  {% block content %}
  &lt;h2&gt;Invoice Details&lt;/h2&gt;
  &lt;div id="horizontalnav"&gt;
    &lt;a href="/index/add_invoice"&gt;Add an Invoice&lt;/a&gt;
    &lt;a href="/index/work_orders"&gt;Add a Work Order&lt;/a&gt;
    &lt;a href="/index/add_payment"&gt;Add Payment&lt;/a&gt;
  &lt;/div&gt;
  &lt;ul STYLE="border: 1px solid;float:left;padding:15px; width: 700px;"&gt;
  &lt;h2 STYLE="text-align: right; COLOR:blue; Font-family:ARIAL"&gt;
  INVOICE&lt;/h2&gt;
  &lt;br/&gt;
    &lt;b&gt;company&lt;/b&gt;
       &lt;br/&gt;
    &lt;div id="list"&gt;
       {% for invoice in invoices_list %}
         &lt;p style="text-align: right;"&gt;INVOICE # {{invoice.invoice_no}}&lt;br/&gt;
         {{invoice.date}}&lt;br/&gt;
         {{invoice.contract_info}}&lt;br/&gt;
         {% for invoice in invoice.work_orders.all %}
           {{invoice}}&lt;br/&gt;
         {% endfor %}
       {% endfor %}
     &lt;p style="text-align: left"&gt;
     &lt;p&gt;To&lt;/p&gt;
     {{client.company}}&lt;br/&gt;
     {{client.address}}&lt;br/&gt;
     {{client.city}}&lt;br/&gt;
     {{client.postcode}}&lt;br/&gt;
     &lt;p&gt;
      &lt;/div&gt;
  &lt;/ul&gt;
  {% endblock %}
  </code></pre>
  
  <p>I want to send fully html powered templates, with django datas. However I am having some problems. I am getting this error.</p>
  
  <pre><code>"to" argument must be a list or tuple
  </code></pre>
  
  <p>I am assuming there might be a problem with my views with the send to email domain, but there should not be a problem with this. I somehow am getting stuck with this.</p>
  
  <pre><code>#views.py
      @login_required
      def invoice_mail(request):
          t = loader.get_template('registration/email.txt')
          c = Context({
          'invoices_list': 'invoices_list',
          'clients_list': 'clients_list',
          })
          send_mail('Welcome to My Project', t.render(c), 'joe@example.com', '[tom@example.com]', fail_silently=False)
  </code></pre>