[Answered ]-Django template not displaying looped keys, values

smsreport_dict should be inside the Context you use in order to render the template:

...
html = t.render(Context({"smsreport_dict": smsreport_dict}))
...

Plus, you forgot to call .items when iterating through the dict in the template:

{% for key, value in smsreport_dict.items %}
  ...

You need to add .items to smsreport_dict

MSGID: {{ msgid }}

<p> Begin
{% for key, value in smsreport_dict.items %}
    <tr>
        <td> Key: {{ key }} </td> 
    </tr>
{% endfor %}
</p>End

See here for a similar situation.