diff --git a/__tests__/html-outlook-outlook.test.ts b/__tests__/html-outlook-outlook.test.ts
index 6e3e05ae8cd76cf9f5d7ccc66c17151fd9f02767..53603d731d723015a0b3d68f1a69a9ef0dd07332 100644
--- a/__tests__/html-outlook-outlook.test.ts
+++ b/__tests__/html-outlook-outlook.test.ts
@@ -24,4 +24,11 @@ describe("[HTML] Outlook-Outlook emails normalization", () => {
       "08", // mismatch of sent and received emls. Passing though )
     ])
   );
+  describe(
+    "Windows-MacOS",
+    describeFunction("windows-macos", [
+      "06", // mismatch of sent and received emls. Passing though )
+      "08", // mismatch of sent and received emls. Passing though )
+    ])
+  );
 });
diff --git a/__tests__/htmltext-outlook-outlook.test.ts b/__tests__/htmltext-outlook-outlook.test.ts
index 42da8e7ae7a35666d878ba001a63983267aee3b3..a7d22f1d9e1e3f73447d4d0c9522c74edde29ae1 100644
--- a/__tests__/htmltext-outlook-outlook.test.ts
+++ b/__tests__/htmltext-outlook-outlook.test.ts
@@ -23,4 +23,11 @@ describe("[Pseudo PLAIN] Outlook-Outlook normalization", () => {
       "08", // mismatch of sent and received emls. Passing though )
     ])
   );
+  describe(
+    "Windows-MacOS",
+    describeFunction("windows-macos", [
+      "06", // mismatch of sent and received emls. Passing though )
+      "08", // mismatch of sent and received emls. Passing though )
+    ])
+  );
 });
diff --git a/__tests__/plain-outlook-outlook.test.ts b/__tests__/plain-outlook-outlook.test.ts
index ac2fa3193cc94df7e20e179beebc825fae5f705d..152d05123d7cfe53e57f5a4f22339fbfccb39425 100644
--- a/__tests__/plain-outlook-outlook.test.ts
+++ b/__tests__/plain-outlook-outlook.test.ts
@@ -17,4 +17,11 @@ describe("[Plain] Outlook-Outlook normalization", () => {
       "08", // mismatch of sent and received emls. Passing though )
     ])
   );
+  describe(
+    "Windows-MacOS",
+    describeFunction("windows-macos", [
+      "06", // mismatch of sent and received emls. Passing though )
+      "08", // mismatch of sent and received emls. Passing though )
+    ])
+  );
 });