diff --git a/src/sentry/receivers/email.py b/src/sentry/receivers/email.py
index c6b7cfb457593b..a589a75b3f82e1 100644
--- a/src/sentry/receivers/email.py
+++ b/src/sentry/receivers/email.py
@@ -16,7 +16,7 @@ def create_email(instance, created, **kwargs):
 
 
 def delete_email(instance, **kwargs):
-    if UserEmail.objects.filter(email=instance.email).exists():
+    if UserEmail.objects.filter(email__iexact=instance.email).exists():
         return
 
     Email.objects.filter(email=instance.email).delete()