diff --git a/lms/djangoapps/branding/api.py b/lms/djangoapps/branding/api.py
index 4f4ade9abcc..01e240d5dcd 100644
--- a/lms/djangoapps/branding/api.py
+++ b/lms/djangoapps/branding/api.py
@@ -13,7 +13,6 @@
 
 """
 
-
 import logging
 
 import six
@@ -673,3 +672,11 @@ def get_home_url():
     Return Dashboard page url
     """
     return reverse('dashboard')
+
+
+def get_logo_url_for_email():
+    """
+    Returns the url for the branded logo image for embedding in email templates.
+    """
+    default_logo_url = getattr(settings, 'DEFAULT_EMAIL_LOGO_URL', None)
+    return getattr(settings, 'LOGO_URL_PNG', None) or default_logo_url
diff --git a/lms/djangoapps/bulk_email/tasks.py b/lms/djangoapps/bulk_email/tasks.py
index 65665f2289e..05a2b4fdd66 100644
--- a/lms/djangoapps/bulk_email/tasks.py
+++ b/lms/djangoapps/bulk_email/tasks.py
@@ -4,7 +4,6 @@
 to a course.
 """
 
-
 import json
 import logging
 import random
@@ -41,6 +40,7 @@
 from markupsafe import escape
 from six import text_type
 
+from lms.djangoapps.branding.api import get_logo_url_for_email
 from lms.djangoapps.bulk_email.models import CourseEmail, Optout
 from lms.djangoapps.bulk_email.api import get_unsubscribed_link
 from lms.djangoapps.courseware.courses import get_course
@@ -58,7 +58,6 @@
 
 log = logging.getLogger('edx.celery.task')
 
-
 # Errors that an individual email is failing to be sent, and should just
 # be treated as a fail.
 SINGLE_EMAIL_FAILURE_ERRORS = (
@@ -123,6 +122,7 @@ def _get_course_email_context(course):
         'course_end_date': course_end_date,
         'account_settings_url': '{}{}'.format(lms_root_url, reverse('account_settings')),
         'email_settings_url': '{}{}'.format(lms_root_url, reverse('dashboard')),
+        'logo_url': get_logo_url_for_email(),
         'platform_name': configuration_helpers.get_value('PLATFORM_NAME', settings.PLATFORM_NAME),
         'year': timezone.now().year,
     }
@@ -294,7 +294,6 @@ def send_course_email(entry_id, email_id, to_list, global_email_context, subtask
     send_exception = None
     new_subtask_status = None
     try:
-        course_title = global_email_context['course_title']
         start_time = time.time()
         new_subtask_status, send_exception = _send_course_email(
             entry_id,
diff --git a/lms/djangoapps/instructor/views/api.py b/lms/djangoapps/instructor/views/api.py
index 0c2b227af7a..3cf21cd0d8f 100644
--- a/lms/djangoapps/instructor/views/api.py
+++ b/lms/djangoapps/instructor/views/api.py
@@ -6,7 +6,6 @@
 Many of these GETs may become PUTs in the future.
 """
 
-
 import csv
 import json
 import logging
@@ -315,8 +314,8 @@ def register_and_enroll_students(request, course_id):  # pylint: disable=too-man
     """
 
     if not configuration_helpers.get_value(
-            'ALLOW_AUTOMATED_SIGNUPS',
-            settings.FEATURES.get('ALLOW_AUTOMATED_SIGNUPS', False),
+        'ALLOW_AUTOMATED_SIGNUPS',
+        settings.FEATURES.get('ALLOW_AUTOMATED_SIGNUPS', False),
     ):
         return HttpResponseForbidden()
 
@@ -2959,8 +2958,8 @@ def invalidate_certificate(request, generated_certificate, certificate_invalidat
     :return: dict object containing updated certificate invalidation data.
     """
     if CertificateInvalidation.get_certificate_invalidations(
-            generated_certificate.course_id,
-            generated_certificate.user,
+        generated_certificate.course_id,
+        generated_certificate.user,
     ):
         raise ValueError(
             _(u"Certificate of {user} has already been invalidated. Please check your spelling and retry.").format(
diff --git a/openedx/core/djangoapps/ace_common/template_context.py b/openedx/core/djangoapps/ace_common/template_context.py
index a1339e209f5..303bfcc204c 100644
--- a/openedx/core/djangoapps/ace_common/template_context.py
+++ b/openedx/core/djangoapps/ace_common/template_context.py
@@ -2,10 +2,10 @@
 Context dictionary for templates that use the ace_common base template.
 """
 
-
 from django.conf import settings
 from django.urls import NoReverseMatch, reverse
 
+from lms.djangoapps.branding.api import get_logo_url_for_email
 from common.djangoapps.edxmako.shortcuts import marketing_link
 from openedx.core.djangoapps.theming.helpers import get_config_value_from_site_or_settings
 
@@ -16,7 +16,6 @@ def get_base_template_context(site):
     """
     # When on LMS and a dashboard is available, use that as the dashboard url.
     # Otherwise, use the home url instead.
-    default_logo_url = getattr(settings, 'DEFAULT_EMAIL_LOGO_URL')
     try:
         dashboard_url = reverse('dashboard')
     except NoReverseMatch:
@@ -38,5 +37,5 @@ def get_base_template_context(site):
             'CONTACT_MAILING_ADDRESS', site=site, site_config_name='contact_mailing_address'),
         'social_media_urls': get_config_value_from_site_or_settings('SOCIAL_MEDIA_FOOTER_URLS', site=site),
         'mobile_store_urls': get_config_value_from_site_or_settings('MOBILE_STORE_URLS', site=site),
-        'logo_url': getattr(settings, 'LOGO_URL_PNG', default_logo_url),
+        'logo_url': get_logo_url_for_email(),
     }