diff --git a/post_office/backends.py b/post_office/backends.py
index 00bfb3df..2622665e 100644
--- a/post_office/backends.py
+++ b/post_office/backends.py
@@ -19,13 +19,16 @@ def send_messages(self, email_messages):
         email messages sent.
         """
         from .mail import create
-        from .models import STATUS
+        from .models import STATUS, Email
         from .utils import create_attachments
+        from .signals import email_queued
 
         if not email_messages:
             return
 
+        default_priority = get_default_priority()
         num_sent = 0
+        emails = []
         for email_message in email_messages:
             subject = email_message.subject
             from_email = email_message.from_email
@@ -62,8 +65,14 @@ def send_messages(self, email_messages):
 
                 email.attachments.add(*attachments)
 
-            if get_default_priority() == 'now':
+            emails.append(email)
+
+            if default_priority == 'now':
                 status = email.dispatch()
                 if status == STATUS.sent:
                     num_sent += 1
+
+        if default_priority != 'now':
+            email_queued.send(sender=Email, emails=emails)
+
         return num_sent
diff --git a/post_office/mail.py b/post_office/mail.py
index 3a9a95a1..e4a1c130 100644
--- a/post_office/mail.py
+++ b/post_office/mail.py
@@ -231,7 +231,8 @@ def send(
 
     if priority == PRIORITY.now:
         email.dispatch(log_level=log_level)
-    email_queued.send(sender=Email, emails=[email])
+    elif commit:
+        email_queued.send(sender=Email, emails=[email])
 
     return email
 
diff --git a/post_office/tests/test_backends.py b/post_office/tests/test_backends.py
index 0ec944ab..32618078 100644
--- a/post_office/tests/test_backends.py
+++ b/post_office/tests/test_backends.py
@@ -1,5 +1,7 @@
 import os
 from email.mime.image import MIMEImage
+from unittest import mock
+
 from django.conf import settings
 from django.core.files.images import File
 from django.core.mail import EmailMultiAlternatives, send_mail, EmailMessage
@@ -164,3 +166,18 @@ def test_default_priority_now(self):
         email = Email.objects.latest('id')
         self.assertEqual(email.status, STATUS.sent)
         self.assertEqual(num_sent, 1)
+
+    @override_settings(
+        EMAIL_BACKEND='post_office.EmailBackend',
+        POST_OFFICE={
+            'DEFAULT_PRIORITY': 'medium',
+            'BACKENDS': {'default': 'django.core.mail.backends.dummy.EmailBackend'}
+        }
+    )
+    @mock.patch('post_office.signals.email_queued.send')
+    def test_email_queued_signal(self, mock):
+        # If DEFAULT_PRIORITY is not "now", the email_queued signal should be sent
+        send_mail('Test', 'Message', 'from1@example.com', ['to@example.com'])
+        email = Email.objects.latest('id')
+        self.assertEqual(email.status, STATUS.queued)
+        self.assertEqual(mock.call_count, 1)
diff --git a/post_office/utils.py b/post_office/utils.py
index 73b0ac31..db69e233 100644
--- a/post_office/utils.py
+++ b/post_office/utils.py
@@ -6,6 +6,7 @@
 from post_office import cache
 from .models import Email, PRIORITY, STATUS, EmailTemplate, Attachment
 from .settings import get_default_priority
+from .signals import email_queued
 from .validators import validate_email_with_name
 
 
@@ -28,6 +29,8 @@ def send_mail(subject, message, from_email, recipient_list, html_message='',
     if priority == PRIORITY.now:
         for email in emails:
             email.dispatch()
+    else:
+        email_queued.send(sender=Email, emails=emails)
     return emails