diff --git a/paperwork/certification_emails.py b/paperwork/certification_emails.py
index ee24d8f..a5ade51 100644
--- a/paperwork/certification_emails.py
+++ b/paperwork/certification_emails.py
@@ -54,7 +54,8 @@ def department_emails(ordered_queryset):
     )
 
     for department, certifications in certifications_by_department:
-        yield make_department_email(department, list(certifications))
+        if department.shop_lead_flag is not None:
+            yield make_department_email(department, list(certifications))
 
 
 def make_member_email(member, certifications):