diff --git a/app/preview/TemplateParams.scala b/app/preview/TemplateParams.scala
index c45e3025a..88d9b614c 100644
--- a/app/preview/TemplateParams.scala
+++ b/app/preview/TemplateParams.scala
@@ -3373,6 +3373,9 @@ object TemplateParams3 {
       "customerName"        -> "Hugh Mann",
       "submissionReference" -> "NC38-N2ZC-TH68"
     ),
+    "sdes_alert" -> Map(
+      "submissionCount" -> "15"
+    ),
     "seis_code" -> Map(
       "confirmationCode" -> "HGDY"
     ),
diff --git a/app/uk/gov/hmrc/hmrcemailrenderer/templates/eeitt/EeittTemplates.scala b/app/uk/gov/hmrc/hmrcemailrenderer/templates/eeitt/EeittTemplates.scala
index 8b013e3d8..c9a8232ad 100644
--- a/app/uk/gov/hmrc/hmrcemailrenderer/templates/eeitt/EeittTemplates.scala
+++ b/app/uk/gov/hmrc/hmrcemailrenderer/templates/eeitt/EeittTemplates.scala
@@ -1992,6 +1992,15 @@ object EeittTemplates {
       htmlTemplate = html.seisConfirmation.f,
       priority = Some(MessagePriority.Standard)
     ),
+    MessageTemplate.create(
+      templateId = "sdes_alert",
+      fromAddress = govUkTeamAddress,
+      service = Eeitt,
+      subject = "You have unprocessed SDES items",
+      plainTemplate = txt.sdesAlert.f,
+      htmlTemplate = html.sdesAlert.f,
+      priority = Some(MessagePriority.Urgent)
+    ),
     MessageTemplate.create(
       templateId = "seis_code",
       fromAddress = govUkTeamAddress,
diff --git a/app/uk/gov/hmrc/hmrcemailrenderer/templates/eeitt/sdesAlert.scala.html b/app/uk/gov/hmrc/hmrcemailrenderer/templates/eeitt/sdesAlert.scala.html
new file mode 100644
index 000000000..d8fa8725e
--- /dev/null
+++ b/app/uk/gov/hmrc/hmrcemailrenderer/templates/eeitt/sdesAlert.scala.html
@@ -0,0 +1,22 @@
+@*
+ * Copyright 2023 HM Revenue & Customs
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *@
+
+@(params: Map[String, Any])
+@uk.gov.hmrc.hmrcemailrenderer.templates.helpers.html.template_main(params, "You have unprocessed SDES items"){
+
+<p style="margin: 0 0 30px; font-size: 19px;">There are @params("submissionCount") unprocessed SDES items. You can view these under 'Sdes Submissions' in your EEITT dashboard.</p>
+
+}
\ No newline at end of file
diff --git a/app/uk/gov/hmrc/hmrcemailrenderer/templates/eeitt/sdesAlert.scala.txt b/app/uk/gov/hmrc/hmrcemailrenderer/templates/eeitt/sdesAlert.scala.txt
new file mode 100644
index 000000000..e2c8cb89d
--- /dev/null
+++ b/app/uk/gov/hmrc/hmrcemailrenderer/templates/eeitt/sdesAlert.scala.txt
@@ -0,0 +1,5 @@
+@(params: Map[String, Any])
+
+There are @params("submissionCount") unprocessed SDES items. You can view these under 'Sdes Submissions' in your EEITT dashboard.
+
+@{uk.gov.hmrc.hmrcemailrenderer.templates.helpers.txt.template_footer()}
\ No newline at end of file
diff --git a/test/uk/gov/hmrc/hmrcemailrenderer/templates/TemplateLocatorSpec.scala b/test/uk/gov/hmrc/hmrcemailrenderer/templates/TemplateLocatorSpec.scala
index 88ec3c2b4..4d613bdc4 100644
--- a/test/uk/gov/hmrc/hmrcemailrenderer/templates/TemplateLocatorSpec.scala
+++ b/test/uk/gov/hmrc/hmrcemailrenderer/templates/TemplateLocatorSpec.scala
@@ -493,6 +493,7 @@ class TemplateLocatorSpec extends AnyWordSpecLike with should.Matchers with Opti
         "eis_confirmation",
         "eis_code",
         "seis_confirmation",
+        "sdes_alert",
         "seis_code",
         "ca3822_confirmation",
         "ca3822_code",