diff --git a/reactos/dll/win32/shell32/shell32.spec b/reactos/dll/win32/shell32/shell32.spec
index de9bcee3a6f..328b7603a94 100644
--- a/reactos/dll/win32/shell32/shell32.spec
+++ b/reactos/dll/win32/shell32/shell32.spec
@@ -283,7 +283,7 @@
 284 stdcall SHEmptyRecycleBinA(long str long)
 285 stdcall SHEmptyRecycleBinW(long wstr long)
 286 stub SHEnableServiceObject
-287 stub SHEnumerateUnreadMailAccountsW
+287 stdcall SHEnumerateUnreadMailAccountsW(ptr long ptr long)
 288 stdcall SHExtractIconsW(wstr long long long ptr ptr long long) user32.PrivateExtractIconsW
 289 stdcall SHFileOperation(ptr) SHFileOperationA
 290 stdcall SHFileOperationA(ptr)
diff --git a/reactos/dll/win32/shell32/stubs.cpp b/reactos/dll/win32/shell32/stubs.cpp
index 0a2e12a4d4e..48339a6a83f 100644
--- a/reactos/dll/win32/shell32/stubs.cpp
+++ b/reactos/dll/win32/shell32/stubs.cpp
@@ -109,6 +109,21 @@ SHSetUnreadMailCountW(LPCWSTR pszMailAddress,
     return E_FAIL;
 }
 
+/*
+ * Unimplemented
+ */
+EXTERN_C HRESULT
+WINAPI
+SHEnumerateUnreadMailAccountsW(HKEY user,
+                               DWORD idx,
+                               LPWSTR mailaddress,
+                               INT mailaddresslen)
+{
+    FIXME("SHEnumerateUnreadMailAccountsW(%p %d %p %d) stub\n",
+        user, idx, mailaddress, mailaddresslen);
+    return E_NOTIMPL;
+}
+
 /*
  * Unimplemented
  */