diff --git a/src/docker-compose.yml b/src/docker-compose.yml
index d64ba80d5..8cb2bd60f 100644
--- a/src/docker-compose.yml
+++ b/src/docker-compose.yml
@@ -25,7 +25,7 @@ services:
       # Run Django in debug mode on local
       - DJANGO_DEBUG=True
       # Set DJANGO_LOG_LEVEL in env
-      - DJANGO_LOG_LEVEL
+      - DJANGO_LOG_LEVEL=DEBUG
       # Run Django without production flags
       - IS_PRODUCTION=False
       # Tell Django where it is being hosted
diff --git a/src/registrar/config/settings.py b/src/registrar/config/settings.py
index d2689242a..da58eee86 100644
--- a/src/registrar/config/settings.py
+++ b/src/registrar/config/settings.py
@@ -476,8 +476,10 @@ class JsonServerFormatter(ServerFormatter):
 
     def format(self, record):
         formatted_record = super().format(record)
+
         if not hasattr(record, "server_time"):
             record.server_time = self.formatTime(record, self.datefmt)
+
         log_entry = {"server_time": record.server_time, "level": record.levelname, "message": formatted_record}
         return json.dumps(log_entry)
 
diff --git a/src/registrar/models/domain_request.py b/src/registrar/models/domain_request.py
index b9e3315d5..7f793f3e0 100644
--- a/src/registrar/models/domain_request.py
+++ b/src/registrar/models/domain_request.py
@@ -831,7 +831,6 @@ def _send_status_update_email(
 
             if custom_email_content:
                 context["custom_email_content"] = custom_email_content
-
             send_templated_email(
                 email_template,
                 email_template_subject,
@@ -877,7 +876,6 @@ def submit(self):
         DraftDomain = apps.get_model("registrar.DraftDomain")
         if not DraftDomain.string_could_be_domain(self.requested_domain.name):
             raise ValueError("Requested domain is not a valid domain name.")
-
         # if the domain has not been submitted before this  must be the first time
         if not self.first_submitted_date:
             self.first_submitted_date = timezone.now().date()
diff --git a/src/registrar/templates/domain_users.html b/src/registrar/templates/domain_users.html
index c41902c6f..a2eb3e604 100644
--- a/src/registrar/templates/domain_users.html
+++ b/src/registrar/templates/domain_users.html
@@ -8,7 +8,7 @@ <h1>Domain managers</h1>
 
   <p>
   Domain managers can update all information related to a domain within the
-  .gov registrar, including including security email and DNS name servers.
+  .gov registrar, including security email and DNS name servers.
   </p>
 
   <ul class="usa-list">
diff --git a/src/registrar/templates/emails/update_to_approved_domain.txt b/src/registrar/templates/emails/update_to_approved_domain.txt
new file mode 100644
index 000000000..99f86ea54
--- /dev/null
+++ b/src/registrar/templates/emails/update_to_approved_domain.txt
@@ -0,0 +1,31 @@
+{% autoescape off %}{# In a text file, we don't want to have HTML entities escaped #}
+
+Hi,
+An update was made to a domain you manage.
+
+DOMAIN: {{domain}}
+UPDATED BY: {{user}}
+UPDATED ON: {{date}}
+INFORMATION UPDATED: {{changes}}
+
+You can view this update in the .gov registrar <https://manage.get.gov/>.
+
+Get help with managing your .gov domain <https://get.gov/help/domain-management/>.
+
+----------------------------------------------------------------
+
+WHY DID YOU RECEIVE THIS EMAIL? 
+You’re listed as a domain manager for {{domain}}, so you’ll receive a notification whenever changes are made to that domain.
+If you have questions or concerns, reach out to the person who made the change or reply to this email.
+
+THANK YOU
+.Gov helps the public identify official, trusted information. Thank you for using a .gov domain.
+
+----------------------------------------------------------------
+
+The .gov team
+Contact us <https://get.gov/contact/> 
+Learn about .gov <https://get.gov>
+
+The .gov registry is a part of the Cybersecurity and Infrastructure Security Agency (CISA) <https://cisa.gov/>
+{% endautoescape %}
\ No newline at end of file
diff --git a/src/registrar/templates/emails/update_to_approved_domain_subject.txt b/src/registrar/templates/emails/update_to_approved_domain_subject.txt
new file mode 100644
index 000000000..cf4c9a14c
--- /dev/null
+++ b/src/registrar/templates/emails/update_to_approved_domain_subject.txt
@@ -0,0 +1 @@
+An update was made to {{domain}}
\ No newline at end of file
diff --git a/src/registrar/tests/test_emails.py b/src/registrar/tests/test_emails.py
index 55b9267e4..e76a6124f 100644
--- a/src/registrar/tests/test_emails.py
+++ b/src/registrar/tests/test_emails.py
@@ -61,11 +61,58 @@ def test_disable_email_flag(self):
         # Assert that an email wasn't sent
         self.assertFalse(self.mock_client.send_email.called)
 
+    @boto3_mocking.patching
+    def test_email_with_cc(self):
+        """Test sending email with cc works"""
+        with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
+            send_templated_email(
+                "emails/update_to_approved_domain.txt",
+                "emails/update_to_approved_domain_subject.txt",
+                "doesnotexist@igorville.com",
+                context={"domain": "test", "user": "test", "date": 1, "changes": "test"},
+                bcc_address=None,
+                cc_addresses=["testy2@town.com", "mayor@igorville.gov"],
+            )
+
+        # check that an email was sent
+        self.assertTrue(self.mock_client.send_email.called)
+
+        # check the call sequence for the email
+        args, kwargs = self.mock_client.send_email.call_args
+        self.assertIn("Destination", kwargs)
+        self.assertIn("CcAddresses", kwargs["Destination"])
+
+        self.assertEqual(["testy2@town.com", "mayor@igorville.gov"], kwargs["Destination"]["CcAddresses"])
+
+    @boto3_mocking.patching
+    @override_settings(IS_PRODUCTION=True)
+    def test_email_with_cc_in_prod(self):
+        """Test sending email with cc works in prod"""
+        with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
+            send_templated_email(
+                "emails/update_to_approved_domain.txt",
+                "emails/update_to_approved_domain_subject.txt",
+                "doesnotexist@igorville.com",
+                context={"domain": "test", "user": "test", "date": 1, "changes": "test"},
+                bcc_address=None,
+                cc_addresses=["testy2@town.com", "mayor@igorville.gov"],
+            )
+
+        # check that an email was sent
+        self.assertTrue(self.mock_client.send_email.called)
+
+        # check the call sequence for the email
+        args, kwargs = self.mock_client.send_email.call_args
+        self.assertIn("Destination", kwargs)
+        self.assertIn("CcAddresses", kwargs["Destination"])
+
+        self.assertEqual(["testy2@town.com", "mayor@igorville.gov"], kwargs["Destination"]["CcAddresses"])
+
     @boto3_mocking.patching
     @less_console_noise_decorator
     def test_submission_confirmation(self):
         """Submission confirmation email works."""
-        domain_request = completed_domain_request()
+        domain_request = completed_domain_request(user=User.objects.create(username="test", email="testy@town.com"))
 
         with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
             domain_request.submit()
@@ -102,7 +149,9 @@ def test_submission_confirmation(self):
     @less_console_noise_decorator
     def test_submission_confirmation_no_current_website_spacing(self):
         """Test line spacing without current_website."""
-        domain_request = completed_domain_request(has_current_website=False)
+        domain_request = completed_domain_request(
+            has_current_website=False, user=User.objects.create(username="test", email="testy@town.com")
+        )
         with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
             domain_request.submit()
         _, kwargs = self.mock_client.send_email.call_args
@@ -115,7 +164,9 @@ def test_submission_confirmation_no_current_website_spacing(self):
     @less_console_noise_decorator
     def test_submission_confirmation_current_website_spacing(self):
         """Test line spacing with current_website."""
-        domain_request = completed_domain_request(has_current_website=True)
+        domain_request = completed_domain_request(
+            has_current_website=True, user=User.objects.create(username="test", email="testy@town.com")
+        )
         with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
             domain_request.submit()
         _, kwargs = self.mock_client.send_email.call_args
@@ -132,7 +183,11 @@ def test_submission_confirmation_other_contacts_spacing(self):
 
         # Create fake creator
         _creator = User.objects.create(
-            username="MrMeoward", first_name="Meoward", last_name="Jones", phone="(888) 888 8888"
+            username="MrMeoward",
+            first_name="Meoward",
+            last_name="Jones",
+            phone="(888) 888 8888",
+            email="testy@town.com",
         )
 
         # Create a fake domain request
@@ -149,7 +204,9 @@ def test_submission_confirmation_other_contacts_spacing(self):
     @less_console_noise_decorator
     def test_submission_confirmation_no_other_contacts_spacing(self):
         """Test line spacing without other contacts."""
-        domain_request = completed_domain_request(has_other_contacts=False)
+        domain_request = completed_domain_request(
+            has_other_contacts=False, user=User.objects.create(username="test", email="testy@town.com")
+        )
         with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
             domain_request.submit()
         _, kwargs = self.mock_client.send_email.call_args
@@ -161,7 +218,9 @@ def test_submission_confirmation_no_other_contacts_spacing(self):
     @less_console_noise_decorator
     def test_submission_confirmation_alternative_govdomain_spacing(self):
         """Test line spacing with alternative .gov domain."""
-        domain_request = completed_domain_request(has_alternative_gov_domain=True)
+        domain_request = completed_domain_request(
+            has_alternative_gov_domain=True, user=User.objects.create(username="test", email="testy@town.com")
+        )
         with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
             domain_request.submit()
         _, kwargs = self.mock_client.send_email.call_args
@@ -174,7 +233,9 @@ def test_submission_confirmation_alternative_govdomain_spacing(self):
     @less_console_noise_decorator
     def test_submission_confirmation_no_alternative_govdomain_spacing(self):
         """Test line spacing without alternative .gov domain."""
-        domain_request = completed_domain_request(has_alternative_gov_domain=False)
+        domain_request = completed_domain_request(
+            has_alternative_gov_domain=False, user=User.objects.create(username="test", email="testy@town.com")
+        )
         with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
             domain_request.submit()
         _, kwargs = self.mock_client.send_email.call_args
@@ -187,7 +248,9 @@ def test_submission_confirmation_no_alternative_govdomain_spacing(self):
     @less_console_noise_decorator
     def test_submission_confirmation_about_your_organization_spacing(self):
         """Test line spacing with about your organization."""
-        domain_request = completed_domain_request(has_about_your_organization=True)
+        domain_request = completed_domain_request(
+            has_about_your_organization=True, user=User.objects.create(username="test", email="testy@town.com")
+        )
         with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
             domain_request.submit()
         _, kwargs = self.mock_client.send_email.call_args
@@ -200,7 +263,9 @@ def test_submission_confirmation_about_your_organization_spacing(self):
     @less_console_noise_decorator
     def test_submission_confirmation_no_about_your_organization_spacing(self):
         """Test line spacing without about your organization."""
-        domain_request = completed_domain_request(has_about_your_organization=False)
+        domain_request = completed_domain_request(
+            has_about_your_organization=False, user=User.objects.create(username="test", email="testy@town.com")
+        )
         with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
             domain_request.submit()
         _, kwargs = self.mock_client.send_email.call_args
@@ -213,7 +278,9 @@ def test_submission_confirmation_no_about_your_organization_spacing(self):
     @less_console_noise_decorator
     def test_submission_confirmation_anything_else_spacing(self):
         """Test line spacing with anything else."""
-        domain_request = completed_domain_request(has_anything_else=True)
+        domain_request = completed_domain_request(
+            has_anything_else=True, user=User.objects.create(username="test", email="testy@town.com")
+        )
         with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
             domain_request.submit()
         _, kwargs = self.mock_client.send_email.call_args
@@ -225,7 +292,9 @@ def test_submission_confirmation_anything_else_spacing(self):
     @less_console_noise_decorator
     def test_submission_confirmation_no_anything_else_spacing(self):
         """Test line spacing without anything else."""
-        domain_request = completed_domain_request(has_anything_else=False)
+        domain_request = completed_domain_request(
+            has_anything_else=False, user=User.objects.create(username="test", email="testy@town.com")
+        )
         with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
             domain_request.submit()
         _, kwargs = self.mock_client.send_email.call_args
diff --git a/src/registrar/tests/test_models_requests.py b/src/registrar/tests/test_models_requests.py
index 2d2c615d7..339841be0 100644
--- a/src/registrar/tests/test_models_requests.py
+++ b/src/registrar/tests/test_models_requests.py
@@ -305,7 +305,7 @@ def test_submit_from_started_sends_email_to_creator(self):
     @less_console_noise_decorator
     def test_submit_from_withdrawn_sends_email(self):
         msg = "Create a withdrawn domain request and submit it and see if email was sent."
-        user, _ = User.objects.get_or_create(username="testy")
+        user, _ = User.objects.get_or_create(username="testy", email="testy@town.com")
         domain_request = completed_domain_request(status=DomainRequest.DomainRequestStatus.WITHDRAWN, user=user)
         self.check_email_sent(domain_request, msg, "submit", 1, expected_content="Hi", expected_email=user.email)
 
@@ -324,14 +324,14 @@ def test_submit_from_in_review_does_not_send_email(self):
     @less_console_noise_decorator
     def test_approve_sends_email(self):
         msg = "Create a domain request and approve it and see if email was sent."
-        user, _ = User.objects.get_or_create(username="testy")
+        user, _ = User.objects.get_or_create(username="testy", email="testy@town.com")
         domain_request = completed_domain_request(status=DomainRequest.DomainRequestStatus.IN_REVIEW, user=user)
         self.check_email_sent(domain_request, msg, "approve", 1, expected_content="approved", expected_email=user.email)
 
     @less_console_noise_decorator
     def test_withdraw_sends_email(self):
         msg = "Create a domain request and withdraw it and see if email was sent."
-        user, _ = User.objects.get_or_create(username="testy")
+        user, _ = User.objects.get_or_create(username="testy", email="testy@town.com")
         domain_request = completed_domain_request(status=DomainRequest.DomainRequestStatus.IN_REVIEW, user=user)
         self.check_email_sent(
             domain_request, msg, "withdraw", 1, expected_content="withdrawn", expected_email=user.email
@@ -339,7 +339,7 @@ def test_withdraw_sends_email(self):
 
     def test_reject_sends_email(self):
         "Create a domain request and reject it and see if email was sent."
-        user, _ = User.objects.get_or_create(username="testy")
+        user, _ = User.objects.get_or_create(username="testy", email="testy@town.com")
         domain_request = completed_domain_request(status=DomainRequest.DomainRequestStatus.APPROVED, user=user)
         expected_email = user.email
         email_allowed, _ = AllowedEmail.objects.get_or_create(email=expected_email)
diff --git a/src/registrar/tests/test_views_domain.py b/src/registrar/tests/test_views_domain.py
index e35d38b32..a375493be 100644
--- a/src/registrar/tests/test_views_domain.py
+++ b/src/registrar/tests/test_views_domain.py
@@ -65,6 +65,10 @@ def setUp(self):
                 datetime.combine(date.today() + timedelta(days=1), datetime.min.time())
             ),
         )
+        self.domain_dns_needed, _ = Domain.objects.get_or_create(
+            name="dns-needed.gov",
+            state=Domain.State.DNS_NEEDED,
+        )
         self.domain_deleted, _ = Domain.objects.get_or_create(
             name="deleted.gov",
             state=Domain.State.DELETED,
@@ -91,6 +95,7 @@ def setUp(self):
         DomainInformation.objects.get_or_create(creator=self.user, domain=self.domain_just_nameserver)
         DomainInformation.objects.get_or_create(creator=self.user, domain=self.domain_on_hold)
         DomainInformation.objects.get_or_create(creator=self.user, domain=self.domain_deleted)
+        DomainInformation.objects.get_or_create(creator=self.user, domain=self.domain_dns_needed)
 
         self.role, _ = UserDomainRole.objects.get_or_create(
             user=self.user, domain=self.domain, role=UserDomainRole.Roles.MANAGER
@@ -99,6 +104,9 @@ def setUp(self):
         UserDomainRole.objects.get_or_create(
             user=self.user, domain=self.domain_dsdata, role=UserDomainRole.Roles.MANAGER
         )
+        UserDomainRole.objects.get_or_create(
+            user=self.user, domain=self.domain_dns_needed, role=UserDomainRole.Roles.MANAGER
+        )
         UserDomainRole.objects.get_or_create(
             user=self.user,
             domain=self.domain_multdsdata,
@@ -236,6 +244,7 @@ def test_unknown_domain_does_not_show_as_expired_on_detail_page(self):
         # At the time of this test's writing, there are 6 UNKNOWN domains inherited
         # from constructors. Let's reset.
         with less_console_noise():
+            PublicContact.objects.all().delete()
             Domain.objects.all().delete()
             UserDomainRole.objects.all().delete()
 
@@ -1967,3 +1976,292 @@ def test_ds_data_form_invalid_digest_sha256(self):
         self.assertContains(
             result, str(DsDataError(code=DsDataErrorCodes.INVALID_DIGEST_SHA256)), count=2, status_code=200
         )
+
+
+class TestDomainChangeNotifications(TestDomainOverview):
+    """Test email notifications on updates to domain information"""
+
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+        allowed_emails = [
+            AllowedEmail(email="info@example.com"),
+            AllowedEmail(email="doesnotexist@igorville.com"),
+        ]
+        AllowedEmail.objects.bulk_create(allowed_emails)
+
+    def setUp(self):
+        super().setUp()
+        self.mock_client_class = MagicMock()
+        self.mock_client = self.mock_client_class.return_value
+
+    @classmethod
+    def tearDownClass(cls):
+        super().tearDownClass()
+        AllowedEmail.objects.all().delete()
+
+    @boto3_mocking.patching
+    @less_console_noise_decorator
+    def test_notification_on_org_name_change(self):
+        """Test that an email is sent when the organization name is changed."""
+        # We may end up sending emails on org name changes later, but it will be addressed
+        # in the portfolio itself, rather than the individual domain.
+
+        self.domain_information.organization_name = "Town of Igorville"
+        self.domain_information.address_line1 = "123 Main St"
+        self.domain_information.city = "Igorville"
+        self.domain_information.state_territory = "IL"
+        self.domain_information.zipcode = "62052"
+        self.domain_information.save()
+
+        org_name_page = self.app.get(reverse("domain-org-name-address", kwargs={"pk": self.domain.id}))
+        session_id = self.app.cookies[settings.SESSION_COOKIE_NAME]
+
+        org_name_page.form["organization_name"] = "Not igorville"
+
+        self.app.set_cookie(settings.SESSION_COOKIE_NAME, session_id)
+        with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
+            org_name_page.form.submit()
+
+        # Check that an email was sent
+        self.assertTrue(self.mock_client.send_email.called)
+
+        # Check email content
+        # check the call sequence for the email
+        _, kwargs = self.mock_client.send_email.call_args
+        self.assertIn("Content", kwargs)
+        self.assertIn("Simple", kwargs["Content"])
+        self.assertIn("Subject", kwargs["Content"]["Simple"])
+        self.assertIn("Body", kwargs["Content"]["Simple"])
+
+        body = kwargs["Content"]["Simple"]["Body"]["Text"]["Data"]
+
+        self.assertIn("DOMAIN: igorville.gov", body)
+        self.assertIn("UPDATED BY: First Last info@example.com", body)
+        self.assertIn("INFORMATION UPDATED: Organization details", body)
+
+    @boto3_mocking.patching
+    @less_console_noise_decorator
+    def test_no_notification_on_org_name_change_with_portfolio(self):
+        """Test that an email is not sent on org name change when the domain is in a portfolio"""
+
+        portfolio, _ = Portfolio.objects.get_or_create(organization_name="Test org", creator=self.user)
+
+        self.domain_information.organization_name = "Town of Igorville"
+        self.domain_information.address_line1 = "123 Main St"
+        self.domain_information.city = "Igorville"
+        self.domain_information.state_territory = "IL"
+        self.domain_information.zipcode = "62052"
+        self.domain_information.portfolio = portfolio
+        self.domain_information.save()
+
+        org_name_page = self.app.get(reverse("domain-org-name-address", kwargs={"pk": self.domain.id}))
+        session_id = self.app.cookies[settings.SESSION_COOKIE_NAME]
+
+        org_name_page.form["organization_name"] = "Not igorville"
+
+        self.app.set_cookie(settings.SESSION_COOKIE_NAME, session_id)
+        with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
+            org_name_page.form.submit()
+
+        # Check that an email was not sent
+        self.assertFalse(self.mock_client.send_email.called)
+
+    @boto3_mocking.patching
+    @less_console_noise_decorator
+    def test_no_notification_on_change_by_analyst(self):
+        """Test that an email is not sent on org name change when the domain is in a portfolio"""
+
+        portfolio, _ = Portfolio.objects.get_or_create(organization_name="Test org", creator=self.user)
+
+        self.domain_information.organization_name = "Town of Igorville"
+        self.domain_information.address_line1 = "123 Main St"
+        self.domain_information.city = "Igorville"
+        self.domain_information.state_territory = "IL"
+        self.domain_information.zipcode = "62052"
+        self.domain_information.portfolio = portfolio
+        self.domain_information.save()
+
+        org_name_page = self.app.get(reverse("domain-org-name-address", kwargs={"pk": self.domain.id}))
+        session_id = self.app.cookies[settings.SESSION_COOKIE_NAME]
+
+        session = self.app.session
+        session["analyst_action"] = "foo"
+        session["analyst_action_location"] = self.domain.id
+        session.save()
+
+        org_name_page.form["organization_name"] = "Not igorville"
+
+        self.app.set_cookie(settings.SESSION_COOKIE_NAME, session_id)
+        with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
+            org_name_page.form.submit()
+
+        # Check that an email was not sent
+        self.assertFalse(self.mock_client.send_email.called)
+
+    @boto3_mocking.patching
+    @less_console_noise_decorator
+    def test_notification_on_security_email_change(self):
+        """Test that an email is sent when the security email is changed."""
+
+        security_email_page = self.app.get(reverse("domain-security-email", kwargs={"pk": self.domain.id}))
+        session_id = self.app.cookies[settings.SESSION_COOKIE_NAME]
+
+        security_email_page.form["security_email"] = "new_security@example.com"
+
+        self.app.set_cookie(settings.SESSION_COOKIE_NAME, session_id)
+        with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
+            security_email_page.form.submit()
+
+        self.assertTrue(self.mock_client.send_email.called)
+
+        _, kwargs = self.mock_client.send_email.call_args
+        body = kwargs["Content"]["Simple"]["Body"]["Text"]["Data"]
+
+        self.assertIn("DOMAIN: igorville.gov", body)
+        self.assertIn("UPDATED BY: First Last info@example.com", body)
+        self.assertIn("INFORMATION UPDATED: Security email", body)
+
+    @boto3_mocking.patching
+    @less_console_noise_decorator
+    def test_notification_on_dnssec_enable(self):
+        """Test that an email is sent when DNSSEC is enabled."""
+
+        page = self.client.get(reverse("domain-dns-dnssec", kwargs={"pk": self.domain_multdsdata.id}))
+        self.assertContains(page, "Disable DNSSEC")
+
+        # Prepare the data for the POST request
+        post_data = {
+            "disable_dnssec": "Disable DNSSEC",
+        }
+
+        with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
+            updated_page = self.client.post(
+                reverse("domain-dns-dnssec", kwargs={"pk": self.domain.id}),
+                post_data,
+                follow=True,
+            )
+
+        self.assertEqual(updated_page.status_code, 200)
+
+        self.assertContains(updated_page, "Enable DNSSEC")
+
+        self.assertTrue(self.mock_client.send_email.called)
+
+        _, kwargs = self.mock_client.send_email.call_args
+        body = kwargs["Content"]["Simple"]["Body"]["Text"]["Data"]
+
+        self.assertIn("DOMAIN: igorville.gov", body)
+        self.assertIn("UPDATED BY: First Last info@example.com", body)
+        self.assertIn("INFORMATION UPDATED: DNSSEC / DS Data", body)
+
+    @boto3_mocking.patching
+    @less_console_noise_decorator
+    def test_notification_on_ds_data_change(self):
+        """Test that an email is sent when DS data is changed."""
+
+        ds_data_page = self.app.get(reverse("domain-dns-dnssec-dsdata", kwargs={"pk": self.domain.id}))
+        session_id = self.app.cookies[settings.SESSION_COOKIE_NAME]
+
+        # Add DS data
+        ds_data_page.forms[0]["form-0-key_tag"] = "12345"
+        ds_data_page.forms[0]["form-0-algorithm"] = "13"
+        ds_data_page.forms[0]["form-0-digest_type"] = "2"
+        ds_data_page.forms[0]["form-0-digest"] = "1234567890ABCDEF1234567890ABCDEF1234567890ABCDEF1234567890ABCDEF"
+
+        self.app.set_cookie(settings.SESSION_COOKIE_NAME, session_id)
+        with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
+            ds_data_page.forms[0].submit()
+
+        # check that the email was sent
+        self.assertTrue(self.mock_client.send_email.called)
+
+        # check some stuff about the email
+        _, kwargs = self.mock_client.send_email.call_args
+        body = kwargs["Content"]["Simple"]["Body"]["Text"]["Data"]
+
+        self.assertIn("DOMAIN: igorville.gov", body)
+        self.assertIn("UPDATED BY: First Last info@example.com", body)
+        self.assertIn("INFORMATION UPDATED: DNSSEC / DS Data", body)
+
+    @boto3_mocking.patching
+    @less_console_noise_decorator
+    def test_notification_on_senior_official_change(self):
+        """Test that an email is sent when the senior official information is changed."""
+
+        self.domain_information.senior_official = Contact.objects.create(
+            first_name="Old", last_name="Official", title="Manager", email="old_official@example.com"
+        )
+        self.domain_information.save()
+
+        senior_official_page = self.app.get(reverse("domain-senior-official", kwargs={"pk": self.domain.id}))
+        session_id = self.app.cookies[settings.SESSION_COOKIE_NAME]
+
+        senior_official_page.form["first_name"] = "New"
+        senior_official_page.form["last_name"] = "Official"
+        senior_official_page.form["title"] = "Director"
+        senior_official_page.form["email"] = "new_official@example.com"
+
+        self.app.set_cookie(settings.SESSION_COOKIE_NAME, session_id)
+        with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
+            senior_official_page.form.submit()
+
+        self.assertTrue(self.mock_client.send_email.called)
+
+        _, kwargs = self.mock_client.send_email.call_args
+        body = kwargs["Content"]["Simple"]["Body"]["Text"]["Data"]
+
+        self.assertIn("DOMAIN: igorville.gov", body)
+        self.assertIn("UPDATED BY: First Last info@example.com", body)
+        self.assertIn("INFORMATION UPDATED: Senior official", body)
+
+    @boto3_mocking.patching
+    @less_console_noise_decorator
+    def test_no_notification_on_senior_official_when_portfolio(self):
+        """Test that an email is not sent when the senior official information is changed
+        and the domain is in a portfolio."""
+
+        self.domain_information.senior_official = Contact.objects.create(
+            first_name="Old", last_name="Official", title="Manager", email="old_official@example.com"
+        )
+        portfolio, _ = Portfolio.objects.get_or_create(
+            organization_name="portfolio",
+            creator=self.user,
+        )
+        self.domain_information.portfolio = portfolio
+        self.domain_information.save()
+
+        senior_official_page = self.app.get(reverse("domain-senior-official", kwargs={"pk": self.domain.id}))
+        session_id = self.app.cookies[settings.SESSION_COOKIE_NAME]
+
+        senior_official_page.form["first_name"] = "New"
+        senior_official_page.form["last_name"] = "Official"
+        senior_official_page.form["title"] = "Director"
+        senior_official_page.form["email"] = "new_official@example.com"
+
+        self.app.set_cookie(settings.SESSION_COOKIE_NAME, session_id)
+        with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
+            senior_official_page.form.submit()
+
+        self.assertFalse(self.mock_client.send_email.called)
+
+    @boto3_mocking.patching
+    @less_console_noise_decorator
+    def test_no_notification_when_dns_needed(self):
+        """Test that an email is not sent when nameservers are changed while the state is DNS_NEEDED."""
+
+        nameservers_page = self.app.get(reverse("domain-dns-nameservers", kwargs={"pk": self.domain_dns_needed.id}))
+        session_id = self.app.cookies[settings.SESSION_COOKIE_NAME]
+
+        # add nameservers
+        nameservers_page.form["form-0-server"] = "ns1-new.dns-needed.gov"
+        nameservers_page.form["form-0-ip"] = "192.168.1.1"
+        nameservers_page.form["form-1-server"] = "ns2-new.dns-needed.gov"
+        nameservers_page.form["form-1-ip"] = "192.168.1.2"
+
+        self.app.set_cookie(settings.SESSION_COOKIE_NAME, session_id)
+        with boto3_mocking.clients.handler_for("sesv2", self.mock_client_class):
+            nameservers_page.form.submit()
+
+        # Check that an email was not sent
+        self.assertFalse(self.mock_client.send_email.called)
diff --git a/src/registrar/utility/email.py b/src/registrar/utility/email.py
index 5f8a93bd9..2a99267a5 100644
--- a/src/registrar/utility/email.py
+++ b/src/registrar/utility/email.py
@@ -22,30 +22,47 @@ class EmailSendingError(RuntimeError):
     pass
 
 
-def send_templated_email(
+def send_templated_email(  # noqa
     template_name: str,
     subject_template_name: str,
-    to_address: str,
-    bcc_address="",
+    to_address: str = "",
+    bcc_address: str = "",
     context={},
     attachment_file=None,
     wrap_email=False,
+    cc_addresses: list[str] = [],
 ):
-    """Send an email built from a template to one email address.
+    """Send an email built from a template.
+
+    to_address and bcc_address currently only support single addresses.
+
+    cc_address is a list and can contain many addresses. Emails not in the
+    whitelist (if applicable) will be filtered out before sending.
 
     template_name and subject_template_name are relative to the same template
     context as Django's HTML templates. context gives additional information
     that the template may use.
 
-    Raises EmailSendingError if SES client could not be accessed
+    Raises EmailSendingError if:
+        SES client could not be accessed
+        No valid recipient addresses are provided
     """
 
+    # by default assume we can send to all addresses (prod has no whitelist)
+    sendable_cc_addresses = cc_addresses
+
     if not settings.IS_PRODUCTION:  # type: ignore
         # Split into a function: C901 'send_templated_email' is too complex.
         # Raises an error if we cannot send an email (due to restrictions).
         # Does nothing otherwise.
         _can_send_email(to_address, bcc_address)
 
+        # if we're not in prod, we need to check the whitelist for CC'ed addresses
+        sendable_cc_addresses, blocked_cc_addresses = get_sendable_addresses(cc_addresses)
+
+        if blocked_cc_addresses:
+            logger.warning("Some CC'ed addresses were removed: %s.", blocked_cc_addresses)
+
     template = get_template(template_name)
     email_body = template.render(context=context)
 
@@ -64,14 +81,23 @@ def send_templated_email(
             aws_secret_access_key=settings.AWS_SECRET_ACCESS_KEY,
             config=settings.BOTO_CONFIG,
         )
-        logger.info(f"An email was sent! Template name: {template_name} to {to_address}")
+        logger.info(f"Connected to SES client! Template name: {template_name} to {to_address}")
     except Exception as exc:
         logger.debug("E-mail unable to send! Could not access the SES client.")
         raise EmailSendingError("Could not access the SES client.") from exc
 
-    destination = {"ToAddresses": [to_address]}
+    destination = {}
+    if to_address:
+        destination["ToAddresses"] = [to_address]
     if bcc_address:
         destination["BccAddresses"] = [bcc_address]
+    if cc_addresses:
+        destination["CcAddresses"] = sendable_cc_addresses
+
+    # make sure we don't try and send an email to nowhere
+    if not destination:
+        message = "Email unable to send, no valid recipients provided."
+        raise EmailSendingError(message)
 
     try:
         if not attachment_file:
@@ -90,6 +116,7 @@ def send_templated_email(
                     },
                 },
             )
+            logger.info("Email sent to [%s], bcc [%s], cc %s", to_address, bcc_address, sendable_cc_addresses)
         else:
             ses_client = boto3.client(
                 "ses",
@@ -101,6 +128,10 @@ def send_templated_email(
             send_email_with_attachment(
                 settings.DEFAULT_FROM_EMAIL, to_address, subject, email_body, attachment_file, ses_client
             )
+            logger.info(
+                "Email with attachment sent to [%s], bcc [%s], cc %s", to_address, bcc_address, sendable_cc_addresses
+            )
+
     except Exception as exc:
         raise EmailSendingError("Could not send SES email.") from exc
 
@@ -125,6 +156,33 @@ def _can_send_email(to_address, bcc_address):
             raise EmailSendingError(message.format(bcc_address))
 
 
+def get_sendable_addresses(addresses: list[str]) -> tuple[list[str], list[str]]:
+    """Checks whether a list of addresses can be sent to.
+
+    Returns: a lists of all provided addresses that are ok to send to and a list of addresses that were blocked.
+
+    Paramaters:
+
+    addresses: a list of strings representing all addresses to be checked.
+    """
+
+    if flag_is_active(None, "disable_email_sending"):  # type: ignore
+        message = "Could not send email. Email sending is disabled due to flag 'disable_email_sending'."
+        logger.warning(message)
+        return ([], [])
+    else:
+        AllowedEmail = apps.get_model("registrar", "AllowedEmail")
+        allowed_emails = []
+        blocked_emails = []
+        for address in addresses:
+            if AllowedEmail.is_allowed_email(address):
+                allowed_emails.append(address)
+            else:
+                blocked_emails.append(address)
+
+        return allowed_emails, blocked_emails
+
+
 def wrap_text_and_preserve_paragraphs(text, width):
     """
     Wraps text to `width` preserving newlines; splits on '\n', wraps segments, rejoins with '\n'.
diff --git a/src/registrar/views/domain.py b/src/registrar/views/domain.py
index de156598a..6e85c9ffb 100644
--- a/src/registrar/views/domain.py
+++ b/src/registrar/views/domain.py
@@ -5,6 +5,7 @@
 inherit from `DomainPermissionView` (or DomainInvitationPermissionDeleteView).
 """
 
+from datetime import date
 import logging
 
 from django.contrib import messages
@@ -152,6 +153,103 @@ def get_domain_info_from_domain(self) -> DomainInformation | None:
 
         return current_domain_info
 
+    def send_update_notification(self, form, force_send=False):
+        """Send a notification to all domain managers that an update has occured
+        for a single domain. Uses update_to_approved_domain.txt template.
+
+        If there are no changes to the form, emails will NOT be sent unless force_send
+        is set to True.
+        """
+
+        # send notification email for changes to any of these forms
+        form_label_dict = {
+            DomainSecurityEmailForm: "Security email",
+            DomainDnssecForm: "DNSSEC / DS Data",
+            DomainDsdataFormset: "DNSSEC / DS Data",
+            DomainOrgNameAddressForm: "Organization details",
+            SeniorOfficialContactForm: "Senior official",
+            NameserverFormset: "Name servers",
+        }
+
+        # forms of these types should not send notifications if they're part of a portfolio/Organization
+        check_for_portfolio = {
+            DomainOrgNameAddressForm,
+            SeniorOfficialContactForm,
+        }
+
+        is_analyst_action = "analyst_action" in self.session and "analyst_action_location" in self.session
+
+        should_notify = False
+
+        if form.__class__ in form_label_dict:
+            if is_analyst_action:
+                logger.debug("No notification sent: Action was conducted by an analyst")
+            else:
+                # these types of forms can cause notifications
+                should_notify = True
+                if form.__class__ in check_for_portfolio:
+                    # some forms shouldn't cause notifications if they are in a portfolio
+                    info = self.get_domain_info_from_domain()
+                    if not info or info.portfolio:
+                        logger.debug("No notification sent: Domain is part of a portfolio")
+                        should_notify = False
+        else:
+            # don't notify for any other types of forms
+            should_notify = False
+        if should_notify and (form.has_changed() or force_send):
+            context = {
+                "domain": self.object.name,
+                "user": self.request.user,
+                "date": date.today(),
+                "changes": form_label_dict[form.__class__],
+            }
+            self.email_domain_managers(
+                self.object,
+                "emails/update_to_approved_domain.txt",
+                "emails/update_to_approved_domain_subject.txt",
+                context,
+            )
+        else:
+            logger.info(f"No notification sent for {form.__class__}.")
+
+    def email_domain_managers(self, domain: Domain, template: str, subject_template: str, context={}):
+        """Send a single email built from a template to all managers for a given domain.
+
+        template_name and subject_template_name are relative to the same template
+        context as Django's HTML templates. context gives additional information
+        that the template may use.
+
+        context is a dictionary containing any information needed to fill in values
+        in the provided template, exactly the same as with send_templated_email.
+
+        Will log a warning if the email fails to send for any reason, but will not raise an error.
+        """
+        manager_pks = UserDomainRole.objects.filter(domain=domain.pk, role=UserDomainRole.Roles.MANAGER).values_list(
+            "user", flat=True
+        )
+        emails = list(User.objects.filter(pk__in=manager_pks).values_list("email", flat=True))
+        try:
+            # Remove the current user so they aren't CC'ed, since they will be the "to_address"
+            emails.remove(self.request.user.email)  # type: ignore
+        except ValueError:
+            pass
+
+        try:
+            send_templated_email(
+                template,
+                subject_template,
+                to_address=self.request.user.email,  # type: ignore
+                context=context,
+                cc_addresses=emails,
+            )
+        except EmailSendingError:
+            logger.warning(
+                "Could not sent notification email to %s for domain %s",
+                emails,
+                domain.name,
+                exc_info=True,
+            )
+
 
 class DomainView(DomainBaseView):
     """Domain detail overview page."""
@@ -227,6 +325,8 @@ def get_success_url(self):
 
     def form_valid(self, form):
         """The form is valid, save the organization name and mailing address."""
+        self.send_update_notification(form)
+
         form.save()
 
         messages.success(self.request, "The organization information for this domain has been updated.")
@@ -330,6 +430,8 @@ def form_valid(self, form):
         form.set_domain_info(self.object.domain_info)
         form.save()
 
+        self.send_update_notification(form)
+
         messages.success(self.request, "The senior official for this domain has been updated.")
 
         # superclass has the redirect
@@ -408,19 +510,25 @@ def post(self, request, *args, **kwargs):
         self._get_domain(request)
         formset = self.get_form()
 
+        logger.debug("got formet")
+
         if "btn-cancel-click" in request.POST:
             url = self.get_success_url()
             return HttpResponseRedirect(url)
 
         if formset.is_valid():
+            logger.debug("formset is valid")
             return self.form_valid(formset)
         else:
+            logger.debug("formset is invalid")
+            logger.debug(formset.errors)
             return self.form_invalid(formset)
 
     def form_valid(self, formset):
         """The formset is valid, perform something with it."""
 
         self.request.session["nameservers_form_domain"] = self.object
+        initial_state = self.object.state
 
         # Set the nameservers from the formset
         nameservers = []
@@ -442,7 +550,6 @@ def form_valid(self, formset):
             except KeyError:
                 # no server information in this field, skip it
                 pass
-
         try:
             self.object.nameservers = nameservers
         except NameserverError as Err:
@@ -462,6 +569,8 @@ def form_valid(self, formset):
                 messages.error(self.request, NameserverError(code=nsErrorCodes.BAD_DATA))
                 logger.error(f"Registry error: {Err}")
         else:
+            if initial_state == Domain.State.READY:
+                self.send_update_notification(formset)
             messages.success(
                 self.request,
                 "The name servers for this domain have been updated. "
@@ -514,7 +623,8 @@ def post(self, request, *args, **kwargs):
                     errmsg = "Error removing existing DNSSEC record(s)."
                     logger.error(errmsg + ": " + err)
                     messages.error(self.request, errmsg)
-
+                else:
+                    self.send_update_notification(form, force_send=True)
         return self.form_valid(form)
 
 
@@ -638,6 +748,8 @@ def form_valid(self, formset, **kwargs):
                 logger.error(f"Registry error: {err}")
             return self.form_invalid(formset)
         else:
+            self.send_update_notification(formset)
+
             messages.success(self.request, "The DS data records for this domain have been updated.")
             # superclass has the redirect
             return super().form_valid(formset)
@@ -704,8 +816,12 @@ def form_valid(self, form):
             messages.error(self.request, SecurityEmailError(code=SecurityEmailErrorCodes.BAD_DATA))
             logger.error(f"Generic registry error: {Err}")
         else:
+            self.send_update_notification(form)
             messages.success(self.request, "The security email for this domain has been updated.")
 
+            # superclass has the redirect
+            return super().form_valid(form)
+
         # superclass has the redirect
         return redirect(self.get_success_url())