diff --git a/configuration/default.mjs b/configuration/default.mjs
new file mode 100644
index 0000000..e69de29
diff --git a/package-lock.json b/package-lock.json
index d209c1d..34b1d33 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -32,6 +32,7 @@
       },
       "devDependencies": {
         "caxa": "^3.0.1",
+        "cross-env": "^7.0.3",
         "got": "^12.5.2",
         "nodemailer": "^6.8.0",
         "nodemon": "^2.0.20",
@@ -1466,6 +1467,24 @@
         "node": ">= 10"
       }
     },
+    "node_modules/cross-env": {
+      "version": "7.0.3",
+      "resolved": "https://registry.npmjs.org/cross-env/-/cross-env-7.0.3.tgz",
+      "integrity": "sha512-+/HKd6EgcQCJGh2PSjZuUitQBQynKor4wrFbRg4DtAgS1aWO+gU52xpH7M9ScGgXSYmAVS9bIJ8EzuaGw0oNAw==",
+      "dev": true,
+      "dependencies": {
+        "cross-spawn": "^7.0.1"
+      },
+      "bin": {
+        "cross-env": "src/bin/cross-env.js",
+        "cross-env-shell": "src/bin/cross-env-shell.js"
+      },
+      "engines": {
+        "node": ">=10.14",
+        "npm": ">=6",
+        "yarn": ">=1"
+      }
+    },
     "node_modules/cross-spawn": {
       "version": "7.0.3",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.3.tgz",
@@ -8029,6 +8048,15 @@
         "readable-stream": "^3.4.0"
       }
     },
+    "cross-env": {
+      "version": "7.0.3",
+      "resolved": "https://registry.npmjs.org/cross-env/-/cross-env-7.0.3.tgz",
+      "integrity": "sha512-+/HKd6EgcQCJGh2PSjZuUitQBQynKor4wrFbRg4DtAgS1aWO+gU52xpH7M9ScGgXSYmAVS9bIJ8EzuaGw0oNAw==",
+      "dev": true,
+      "requires": {
+        "cross-spawn": "^7.0.1"
+      }
+    },
     "cross-spawn": {
       "version": "7.0.3",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.3.tgz",
diff --git a/package.json b/package.json
index e7f0276..468571d 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "prepare": "(cd ./server/ && npm run prepare && cd ..) && (cd ./static/ && npm run prepare && cd ..)",
     "start": "nodemon --watch \"./server/**/*.mts\" --watch \"./static/{{prepare,leafac--javascript}.mjs,**/*.{png,jpeg,ico}}\" --watch \"./configuration/**/*.mjs\" --ext \"*\" --exec \"npm run prepare && node ./build/server/index.mjs ./configuration/development.mjs\"",
     "start:clean:data": "npm run clean:data && npm run start",
-    "test": "prettier --check \"./server/**/*.mts\" --check \"./static/prepare.mjs\" --check \"./configuration/**/*.mjs\" --end-of-line auto",
+    "test": "prettier --check \"./server/**/*.mts\" --check \"./static/prepare.mjs\" --check \"./configuration/**/*.mjs\" --end-of-line auto && npm run prepare && cross-env TEST=kill-the-newsletter node ./build/server/index.mjs",
     "clean:all": "npm run clean:build && npm run clean:data && npm run clean:node_modules",
     "clean:build": "shx rm -rf ./build/",
     "clean:data": "shx rm -rf ./data/",
@@ -47,6 +47,7 @@
   },
   "devDependencies": {
     "caxa": "^3.0.1",
+    "cross-env": "^7.0.3",
     "got": "^12.5.2",
     "nodemailer": "^6.8.0",
     "nodemon": "^2.0.20",
diff --git a/server/index.mts b/server/index.mts
index e69de29..55f14e3 100644
--- a/server/index.mts
+++ b/server/index.mts
@@ -0,0 +1,5 @@
+import assert from "node:assert/strict";
+
+if (process.env.TEST === "kill-the-newsletter") {
+  assert.equal(1 + 1, 2);
+}