diff --git a/.github/workflows/test-and-publish.yml b/.github/workflows/test-and-publish.yml
new file mode 100644
index 0000000..021bbaf
--- /dev/null
+++ b/.github/workflows/test-and-publish.yml
@@ -0,0 +1,43 @@
+name: Test and Publish
+
+on:
+  push:
+
+jobs:
+  unit-tests:
+    name: Unit Tests
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Run unit tests
+        run: docker-compose -f actions-services.yml run --rm app ./run-tests.sh
+      - name: Run API tests
+        run: docker-compose -f actions-services.yml run --rm app ./run-tests-api.sh
+      - name: Check PSR2
+        run: docker-compose -f actions-services.yml run --rm app ./check-psr2.sh
+
+  build-and-publish:
+    name: Build and Publish
+    needs: [unit-tests,api-tests,psr2-check]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ vars.DOCKER_ORG }}/email-service
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
diff --git a/actions-services.yml b/actions-services.yml
new file mode 100644
index 0000000..dfcc7df
--- /dev/null
+++ b/actions-services.yml
@@ -0,0 +1,28 @@
+version: '2'
+services:
+  db:
+    image: mariadb:10
+    environment:
+      MYSQL_ROOT_PASSWORD: r00tp@ss!
+      MYSQL_DATABASE: test
+      MYSQL_USER: email
+      MYSQL_PASSWORD: email
+
+  app:
+    build: .
+    depends_on:
+      - db
+    working_dir: /data
+    environment:
+      APP_ENV: test
+      MYSQL_HOST: db
+      MYSQL_DATABASE: test
+      MYSQL_USER: email
+      MYSQL_PASSWORD: email
+      API_ACCESS_KEYS: abc123
+      APP_NAME: email-service
+      MAILER_HOST: test
+      MAILER_USERNAME: test
+      MAILER_PASSWORD: test
+      NOTIFICATION_EMAIL: test@test.com
+      FROM_EMAIL: test@test.com
diff --git a/application/common/config/main.php b/application/common/config/main.php
index aefd793..58343b0 100644
--- a/application/common/config/main.php
+++ b/application/common/config/main.php
@@ -72,6 +72,17 @@
                 ],
                 [
                     'class' => EmailTarget::class,
+                    'except' => [
+                        'yii\web\HttpException:400',
+                        'yii\web\HttpException:401',
+                        'yii\web\HttpException:403',
+                        'yii\web\HttpException:404',
+                        'yii\web\HttpException:409',
+                        'yii\web\HttpException:410',
+                        'yii\web\HttpException:422',
+                        'yii\web\HttpException:429',
+                        'yii\web\HttpException:503',
+                    ],
                     'categories' => ['application'], // stick to messages from this app, not all of Yii's built-in messaging.
                     'logVars' => [], // no need for default stuff: http://www.yiiframework.com/doc-2.0/yii-log-target.html#$logVars-detail
                     'levels' => ['error'],
diff --git a/application/frontend/controllers/SiteController.php b/application/frontend/controllers/SiteController.php
index f5e11ca..d91019e 100644
--- a/application/frontend/controllers/SiteController.php
+++ b/application/frontend/controllers/SiteController.php
@@ -6,10 +6,12 @@
 use Yii;
 use yii\rest\Controller;
 use yii\web\NotFoundHttpException;
-use yii\web\ServerErrorHttpException;
+use yii\web\HttpException;
 
 class SiteController extends Controller
 {
+    public const HttpExceptionServiceUnavailable = 503;
+
     public function behaviors()
     {
         $behaviors = parent::behaviors();
@@ -29,7 +31,8 @@ public function actionStatus()
             Yii::$app->db->open();
         } catch (Exception $e) {
             \Yii::error($e->getMessage());
-            throw new ServerErrorHttpException(
+            throw new HttpException(
+                self::HttpExceptionServiceUnavailable,
                 'Database connection problem.',
                 $e->getCode()
             );
diff --git a/codeship-services.yml b/codeship-services.yml
deleted file mode 100644
index da054bc..0000000
--- a/codeship-services.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-db:
-    image: mariadb:10
-    environment:
-        MYSQL_ROOT_PASSWORD: r00tp@ss!
-        MYSQL_DATABASE: test
-        MYSQL_USER: email
-        MYSQL_PASSWORD: email
-
-app:
-    build:
-        image: silintl/email-service
-        dockerfile_path: ./Dockerfile
-        cached: true
-    links:
-        - db
-    working_dir: /data
-    command: /data/run-tests.sh
-    environment:
-        APP_ENV: test
-        MYSQL_HOST: db
-        MYSQL_DATABASE: test
-        MYSQL_USER: email
-        MYSQL_PASSWORD: email
-        API_ACCESS_KEYS: abc123
-        APP_NAME: email-service
-        MAILER_HOST: test
-        MAILER_USERNAME: test
-        MAILER_PASSWORD: test
-        NOTIFICATION_EMAIL: test@test.com
-        FROM_EMAIL: test@test.com
diff --git a/codeship-steps.yml b/codeship-steps.yml
deleted file mode 100644
index 61c865f..0000000
--- a/codeship-steps.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-
-- type: parallel
-  steps:
-  - name: unit test
-    service: app
-    command: whenavail db 3306 100 /data/run-tests.sh
-  - name: api test
-    service: app
-    command: whenavail db 3306 100 /data/run-tests-api.sh
-  - name: check_psr2
-    service: app
-    command: /data/check-psr2.sh
-
-- name: push
-  service: app
-  type: push
-  image_name: silintl/email-service
-  image_tag: "{{.Branch}}"
-  exclude: main
-  registry: https://index.docker.io/v1/
-  encrypted_dockercfg_path: dockercfg.encrypted
-
-- name: push_latest
-  service: app
-  type: push
-  image_name: silintl/email-service
-  image_tag: "latest"
-  tag: main
-  registry: https://index.docker.io/v1/
-  encrypted_dockercfg_path: dockercfg.encrypted
diff --git a/dockercfg.encrypted b/dockercfg.encrypted
deleted file mode 100644
index 8f02c34..0000000
--- a/dockercfg.encrypted
+++ /dev/null
@@ -1,2 +0,0 @@
-codeship:v2
-VlUkVRmcLlulmam1KEV1a1OJXhyDA8Y5+KEh01iZnv6ND30I10C6VzivTjvBM7UrzJcMaTEP0PUE5nAHbQXc2q4QnyP+94JDcPLJjqydx7qlNe94/Og8A/0lRnAumlddPbbJmRj3bjMloU3lU/G4COViCy5JHTzvVRSjdrmnGpULjP0hriqwQ4HrrL8TRWJ6bbiR65MZ/ZiG3t9vugIpjMcOo8iFVNq15MksHSpM7MJUjLyyYGV1I58S9OwzLl45xIgFIWPF6DfhfJLbev2/Cm7aGE31FOwvOlrit9J/+Yxjyy/+UyedGnM2AiyN
\ No newline at end of file