diff --git a/lib/DI/ContainerConfigurator.php b/lib/DI/ContainerConfigurator.php
index a7b9010a0d..10959839a3 100644
--- a/lib/DI/ContainerConfigurator.php
+++ b/lib/DI/ContainerConfigurator.php
@@ -156,6 +156,7 @@ class ContainerConfigurator implements IContainerConfigurator {
     // Newsletter
     $container->autowire(\MailPoet\Newsletter\AutomatedLatestContent::class)->setPublic(true);
     // Util
+    $container->autowire(\MailPoet\Util\Cookies::class);
     $container->autowire(\MailPoet\Util\Url::class)->setPublic(true);
     $container->autowire(\MailPoet\Util\Installation::class);
     // WooCommerce
diff --git a/lib/Statistics/Track/Clicks.php b/lib/Statistics/Track/Clicks.php
index ea6f2ac2e7..d830aaef24 100644
--- a/lib/Statistics/Track/Clicks.php
+++ b/lib/Statistics/Track/Clicks.php
@@ -5,6 +5,7 @@ use MailPoet\Models\StatisticsClicks;
 use MailPoet\Newsletter\Shortcodes\Categories\Link;
 use MailPoet\Newsletter\Shortcodes\Shortcodes;
 use MailPoet\Settings\SettingsController;
+use MailPoet\Util\Cookies;
 use MailPoet\WP\Functions as WPFunctions;
 
 if (!defined('ABSPATH')) exit;
@@ -20,8 +21,12 @@ class Clicks {
   /** @var SettingsController */
   private $settings_controller;
 
-  public function __construct(SettingsController $settings_controller) {
+  /** @var Cookies */
+  private $cookies;
+
+  public function __construct(SettingsController $settings_controller, Cookies $cookies) {
     $this->settings_controller = $settings_controller;
+    $this->cookies = $cookies;
   }
 
   /**
@@ -57,27 +62,31 @@ class Clicks {
 
   private function sendRevenueCookie(StatisticsClicks $clicks) {
     if ($this->settings_controller->get('woocommerce.accept_cookie_revenue_tracking.enabled')) {
-      setcookie(
+      $this->cookies->set(
         self::REVENUE_TRACKING_COOKIE_NAME,
-        serialize([
+        [
           'statistics_clicks' => $clicks->id,
           'created_at' => time(),
-        ]),
-        time() + self::REVENUE_TRACKING_COOKIE_EXPIRY,
-        '/'
+        ],
+        [
+          'expires' => time() + self::REVENUE_TRACKING_COOKIE_EXPIRY,
+          'path' => '/',
+        ]
       );
     }
   }
 
   private function sendAbandonedCartCookie($subscriber) {
     if ($this->settings_controller->get('woocommerce.accept_cookie_revenue_tracking.enabled')) {
-      setcookie(
+      $this->cookies->set(
         self::ABANDONED_CART_COOKIE_NAME,
-        serialize([
+        [
           'subscriber_id' => $subscriber->id,
-        ]),
-        time() + self::ABANDONED_CART_COOKIE_EXPIRY,
-        '/'
+        ],
+        [
+          'expires' => time() + self::ABANDONED_CART_COOKIE_EXPIRY,
+          'path' => '/',
+        ]
       );
     }
   }
diff --git a/lib/Statistics/Track/WooCommercePurchases.php b/lib/Statistics/Track/WooCommercePurchases.php
index 523207bef8..a869d949cd 100644
--- a/lib/Statistics/Track/WooCommercePurchases.php
+++ b/lib/Statistics/Track/WooCommercePurchases.php
@@ -4,6 +4,7 @@ namespace MailPoet\Statistics\Track;
 use MailPoet\Models\StatisticsClicks;
 use MailPoet\Models\StatisticsWooCommercePurchases;
 use MailPoet\Models\Subscriber;
+use MailPoet\Util\Cookies;
 use MailPoet\WooCommerce\Helper;
 use WC_Order;
 
@@ -15,8 +16,12 @@ class WooCommercePurchases {
   /** @var Helper */
   private $woocommerce_helper;
 
-  function __construct(Helper $woocommerce_helper) {
+  /** @var Cookies */
+  private $cookies;
+
+  function __construct(Helper $woocommerce_helper, Cookies $cookies) {
     $this->woocommerce_helper = $woocommerce_helper;
+    $this->cookies = $cookies;
   }
 
   function trackPurchase($id, $use_cookies = true) {
@@ -61,12 +66,12 @@ class WooCommercePurchases {
   }
 
   private function getSubscriberEmailFromCookie() {
-    $click_cookie = $this->getClickCookie();
-    if (!$click_cookie) {
+    $cookie_data = $this->cookies->get(Clicks::REVENUE_TRACKING_COOKIE_NAME);
+    if (!$cookie_data) {
       return null;
     }
 
-    $click = StatisticsClicks::findOne($click_cookie['statistics_clicks']);
+    $click = StatisticsClicks::findOne($cookie_data['statistics_clicks']);
     if (!$click) {
       return null;
     }
@@ -77,11 +82,4 @@ class WooCommercePurchases {
     }
     return null;
   }
-
-  private function getClickCookie() {
-    if (empty($_COOKIE[Clicks::REVENUE_TRACKING_COOKIE_NAME])) {
-      return null;
-    }
-    return unserialize($_COOKIE[Clicks::REVENUE_TRACKING_COOKIE_NAME]);
-  }
 }
diff --git a/lib/Util/Cookies.php b/lib/Util/Cookies.php
new file mode 100644
index 0000000000..5bf50a23e4
--- /dev/null
+++ b/lib/Util/Cookies.php
@@ -0,0 +1,47 @@
+<?php
+
+namespace MailPoet\Util;
+
+use InvalidArgumentException;
+
+class Cookies {
+  const DEFAULT_OPTIONS = [
+    'expires' => 0,
+    'path' => '',
+    'domain' => '',
+    'secure' => false,
+    'httponly' => false,
+  ];
+
+  function set($name, $value, array $options = []) {
+    $options = $options + self::DEFAULT_OPTIONS;
+    $value = json_encode($value, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+    $error = json_last_error();
+    if ($error) {
+      throw new InvalidArgumentException();
+    }
+
+    // on PHP_VERSION_ID >= 70300 we'll be able to simply setcookie($name, $value, $options);
+    setcookie(
+      $name,
+      $value,
+      $options['expires'],
+      $options['path'],
+      $options['domain'],
+      $options['secure'],
+      $options['httponly']
+    );
+  }
+
+  function get($name) {
+    if (!array_key_exists($name, $_COOKIE)) {
+      return null;
+    }
+    $value = json_decode(stripslashes($_COOKIE[$name]), true);
+    $error = json_last_error();
+    if ($error) {
+      return null;
+    }
+    return $value;
+  }
+}
diff --git a/tests/integration/Router/Endpoints/TrackTest.php b/tests/integration/Router/Endpoints/TrackTest.php
index 3b94dc1a52..5029e1ba25 100644
--- a/tests/integration/Router/Endpoints/TrackTest.php
+++ b/tests/integration/Router/Endpoints/TrackTest.php
@@ -13,6 +13,7 @@ use MailPoet\Settings\SettingsController;
 use MailPoet\Statistics\Track\Clicks;
 use MailPoet\Statistics\Track\Opens;
 use MailPoet\Tasks\Sending as SendingTask;
+use MailPoet\Util\Cookies;
 
 class TrackTest extends \MailPoetTest {
   function _before() {
@@ -50,7 +51,7 @@ class TrackTest extends \MailPoetTest {
       'preview' => false,
     ];
     // instantiate class
-    $this->track = new Track(new Clicks(new SettingsController()), new Opens());
+    $this->track = new Track(new Clicks(new SettingsController(), new Cookies()), new Opens());
   }
 
   function testItReturnsFalseWhenTrackDataIsMissing() {
diff --git a/tests/integration/Statistics/Track/ClicksTest.php b/tests/integration/Statistics/Track/ClicksTest.php
index af30adbae5..07a18a463a 100644
--- a/tests/integration/Statistics/Track/ClicksTest.php
+++ b/tests/integration/Statistics/Track/ClicksTest.php
@@ -13,6 +13,7 @@ use MailPoet\Models\Subscriber;
 use MailPoet\Settings\SettingsController;
 use MailPoet\Statistics\Track\Clicks;
 use MailPoet\Tasks\Sending as SendingTask;
+use MailPoet\Util\Cookies;
 
 class ClicksTest extends \MailPoetTest {
 
@@ -60,12 +61,12 @@ class ClicksTest extends \MailPoetTest {
     $this->settings_controller = Stub::makeEmpty(SettingsController::class, [
       'get' => false,
     ], $this);
-    $this->clicks = new Clicks($this->settings_controller);
+    $this->clicks = new Clicks($this->settings_controller, new Cookies());
   }
 
   function testItAbortsWhenTrackDataIsEmptyOrMissingLink() {
     // abort function should be called twice:
-    $clicks = Stub::construct($this->clicks, [$this->settings_controller], [
+    $clicks = Stub::construct($this->clicks, [$this->settings_controller, new Cookies()], [
       'abort' => Expected::exactly(2),
     ], $this);
     $data = $this->track_data;
@@ -80,7 +81,7 @@ class ClicksTest extends \MailPoetTest {
     $data = $this->track_data;
     $data->subscriber->wp_user_id = 99;
     $data->preview = true;
-    $clicks = Stub::construct($this->clicks, [$this->settings_controller], [
+    $clicks = Stub::construct($this->clicks, [$this->settings_controller, new Cookies()], [
       'redirectToUrl' => null,
     ], $this);
     $clicks->track($data);
@@ -90,7 +91,7 @@ class ClicksTest extends \MailPoetTest {
 
   function testItTracksClickAndOpenEvent() {
     $data = $this->track_data;
-    $clicks = Stub::construct($this->clicks, [$this->settings_controller], [
+    $clicks = Stub::construct($this->clicks, [$this->settings_controller, new Cookies()], [
       'redirectToUrl' => null,
     ], $this);
     $clicks->track($data);
@@ -99,14 +100,14 @@ class ClicksTest extends \MailPoetTest {
   }
 
   function testItRedirectsToUrlAfterTracking() {
-    $clicks = Stub::construct($this->clicks, [$this->settings_controller], [
+    $clicks = Stub::construct($this->clicks, [$this->settings_controller, new Cookies()], [
       'redirectToUrl' => Expected::exactly(1),
     ], $this);
     $clicks->track($this->track_data);
   }
 
   function testItIncrementsClickEventCount() {
-    $clicks = Stub::construct($this->clicks, [$this->settings_controller], [
+    $clicks = Stub::construct($this->clicks, [$this->settings_controller, new Cookies()], [
       'redirectToUrl' => null,
     ], $this);
     $clicks->track($this->track_data);
@@ -127,7 +128,7 @@ class ClicksTest extends \MailPoetTest {
   }
 
   function testItFailsToConvertsInvalidShortcodeToUrl() {
-    $clicks = Stub::construct($this->clicks, [$this->settings_controller], [
+    $clicks = Stub::construct($this->clicks, [$this->settings_controller, new Cookies()], [
       'abort' => Expected::exactly(1),
     ], $this);
     // should call abort() method if shortcode action does not exist
diff --git a/tests/integration/Statistics/Track/WooCommercePurchasesTest.php b/tests/integration/Statistics/Track/WooCommercePurchasesTest.php
index 5fbbf9d16f..395c6dd5ce 100644
--- a/tests/integration/Statistics/Track/WooCommercePurchasesTest.php
+++ b/tests/integration/Statistics/Track/WooCommercePurchasesTest.php
@@ -10,6 +10,7 @@ use MailPoet\Models\StatisticsWooCommercePurchases;
 use MailPoet\Models\Subscriber;
 use MailPoet\Statistics\Track\WooCommercePurchases;
 use MailPoet\Tasks\Sending;
+use MailPoet\Util\Cookies;
 use MailPoet\WooCommerce\Helper as WooCommerceHelper;
 use PHPUnit_Framework_MockObject_MockObject;
 use WC_Order;
@@ -27,6 +28,9 @@ class WooCommercePurchasesTest extends \MailPoetTest {
   /** @var NewsletterLink */
   private $link;
 
+  /** @var Cookies */
+  private $cookies;
+
   function _before() {
     parent::_before();
     $this->cleanup();
@@ -35,12 +39,13 @@ class WooCommercePurchasesTest extends \MailPoetTest {
     $this->newsletter = $this->createNewsletter();
     $this->queue = $this->createQueue($this->newsletter, $this->subscriber);
     $this->link = $this->createLink($this->newsletter, $this->queue);
+    $this->cookies = new Cookies();
   }
 
   function testItTracksPayment() {
     $click = $this->createClick($this->link, $this->subscriber);
     $order_mock = $this->createOrderMock($this->subscriber->email);
-    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock));
+    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock), $this->cookies);
     $woocommerce_purchases->trackPurchase($order_mock->get_id());
     $purchase_stats = StatisticsWooCommercePurchases::findMany();
     expect(count($purchase_stats))->equals(1);
@@ -63,7 +68,7 @@ class WooCommercePurchasesTest extends \MailPoetTest {
     $click_2 = $this->createClick($link, $this->subscriber, 1);
 
     $order_mock = $this->createOrderMock($this->subscriber->email);
-    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock));
+    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock), $this->cookies);
     $woocommerce_purchases->trackPurchase($order_mock->get_id());
     $purchase_stats = StatisticsWooCommercePurchases::findMany();
     expect(count($purchase_stats))->equals(2);
@@ -84,12 +89,12 @@ class WooCommercePurchasesTest extends \MailPoetTest {
 
     // first order
     $order_mock = $this->createOrderMock($this->subscriber->email, 10.0, 123);
-    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock));
+    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock), $this->cookies);
     $woocommerce_purchases->trackPurchase($order_mock->get_id());
 
     // second order
     $order_mock = $this->createOrderMock($this->subscriber->email, 20.0, 456);
-    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock));
+    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock), $this->cookies);
     $woocommerce_purchases->trackPurchase($order_mock->get_id());
 
     expect(count(StatisticsWooCommercePurchases::findMany()))->equals(2);
@@ -100,7 +105,7 @@ class WooCommercePurchasesTest extends \MailPoetTest {
     $this->createClick($this->link, $this->subscriber, 3);
     $this->createClick($this->link, $this->subscriber, 5);
     $order_mock = $this->createOrderMock($this->subscriber->email);
-    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock));
+    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock), $this->cookies);
     $woocommerce_purchases->trackPurchase($order_mock->get_id());
 
     $purchase_stats = StatisticsWooCommercePurchases::findMany();
@@ -111,7 +116,7 @@ class WooCommercePurchasesTest extends \MailPoetTest {
   function testItTracksPaymentOnlyOnce() {
     $this->createClick($this->link, $this->subscriber);
     $order_mock = $this->createOrderMock($this->subscriber->email);
-    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock));
+    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock), $this->cookies);
     $woocommerce_purchases->trackPurchase($order_mock->get_id());
     $woocommerce_purchases->trackPurchase($order_mock->get_id());
     expect(count(StatisticsWooCommercePurchases::findMany()))->equals(1);
@@ -120,7 +125,7 @@ class WooCommercePurchasesTest extends \MailPoetTest {
   function testItDoesNotTrackPaymentWhenClickTooOld() {
     $this->createClick($this->link, $this->subscriber, 20);
     $order_mock = $this->createOrderMock($this->subscriber->email);
-    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock));
+    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock), $this->cookies);
     $woocommerce_purchases->trackPurchase($order_mock->get_id());
     expect(count(StatisticsWooCommercePurchases::findMany()))->equals(0);
   }
@@ -128,7 +133,7 @@ class WooCommercePurchasesTest extends \MailPoetTest {
   function testItDoesNotTrackPaymentForDifferentEmail() {
     $this->createClick($this->link, $this->subscriber);
     $order_mock = $this->createOrderMock('different.email@example.com');
-    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock));
+    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock), $this->cookies);
     $woocommerce_purchases->trackPurchase($order_mock->get_id());
     expect(count(StatisticsWooCommercePurchases::findMany()))->equals(0);
   }
@@ -136,7 +141,7 @@ class WooCommercePurchasesTest extends \MailPoetTest {
   function testItDoesNotTrackPaymentWhenClickNewerThanOrder() {
     $this->createClick($this->link, $this->subscriber, 0);
     $order_mock = $this->createOrderMock($this->subscriber->email);
-    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock));
+    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock), $this->cookies);
     $woocommerce_purchases->trackPurchase($order_mock->get_id());
     expect(count(StatisticsWooCommercePurchases::findMany()))->equals(0);
   }
@@ -148,13 +153,13 @@ class WooCommercePurchasesTest extends \MailPoetTest {
     $cookie_email_subscriber = $this->createSubscriber($cookie_email);
 
     $click = $this->createClick($this->link, $cookie_email_subscriber);
-    $_COOKIE['mailpoet_revenue_tracking'] = serialize([
+    $_COOKIE['mailpoet_revenue_tracking'] = json_encode([
       'statistics_clicks' => $click->id,
       'created_at' => time(),
     ]);
 
     $order_mock = $this->createOrderMock($order_email);
-    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock));
+    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock), $this->cookies);
     $woocommerce_purchases->trackPurchase($order_mock->get_id());
     $purchase_stats = StatisticsWooCommercePurchases::findMany();
     expect(count($purchase_stats))->equals(1);
@@ -171,13 +176,13 @@ class WooCommercePurchasesTest extends \MailPoetTest {
     $order_email_click = $this->createClick($this->link, $order_email_subscriber);
     $cookie_email_click = $this->createClick($this->link, $cookie_email_subscriber);
 
-    $_COOKIE['mailpoet_revenue_tracking'] = serialize([
+    $_COOKIE['mailpoet_revenue_tracking'] = json_encode([
       'statistics_clicks' => $cookie_email_click->id,
       'created_at' => time(),
     ]);
 
     $order_mock = $this->createOrderMock($order_email);
-    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock));
+    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock), $this->cookies);
     $woocommerce_purchases->trackPurchase($order_mock->get_id());
     $purchase_stats = StatisticsWooCommercePurchases::findMany();
     expect(count($purchase_stats))->equals(1);
@@ -199,13 +204,13 @@ class WooCommercePurchasesTest extends \MailPoetTest {
     $link = $this->createLink($newsletter, $queue);
     $cookie_email_click = $this->createClick($link, $cookie_email_subscriber);
 
-    $_COOKIE['mailpoet_revenue_tracking'] = serialize([
+    $_COOKIE['mailpoet_revenue_tracking'] = json_encode([
       'statistics_clicks' => $cookie_email_click->id,
       'created_at' => time(),
     ]);
 
     $order_mock = $this->createOrderMock($order_email);
-    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock));
+    $woocommerce_purchases = new WooCommercePurchases($this->createWooCommerceHelperMock($order_mock), $this->cookies);
     $woocommerce_purchases->trackPurchase($order_mock->get_id());
     $purchase_stats = StatisticsWooCommercePurchases::findMany();
     expect(count($purchase_stats))->equals(2);