Изменил расположение картинки (для отслеживания открытий) в письмах.

emencia/django/newsletter/mailer.py

@@ -308,7 +308,7 @@ class NewsLetterSender(object):
 
         if TRACKING_IMAGE:
             image_tracking = render_to_string('newsletter/newsletter_image_tracking.html', context)
-            content = body_insertion(content, image_tracking, end=True)
+            content = body_insertion(content, image_tracking)
 
         # include preheader
         if self.newsletter.preheader:

emencia/django/newsletter/templates/newsletter/newsletter_image_tracking.html

@@ -1 +1 @@
-<img src="http://{{ domain }}{% url 'newsletter_newsletter_tracking' slug=newsletter.slug uidb36=uidb36 token=token format=tracking_image_format %}" width="1" height="1" />
+<img src="https://{{ domain }}{% url 'newsletter_newsletter_tracking' slug=newsletter.slug uidb36=uidb36 token=token format=tracking_image_format %}" width="1" height="1" />