diff --git a/lib/Config/Populator.php b/lib/Config/Populator.php
index 08e7ef7946..e0f3fb1339 100644
--- a/lib/Config/Populator.php
+++ b/lib/Config/Populator.php
@@ -6,9 +6,12 @@ use MailPoet\Mailer\MailerLog;
 use MailPoet\Models\Newsletter;
 use MailPoet\Models\Segment;
 use MailPoet\Models\SendingQueue;
+use MailPoet\Models\StatisticsForms;
+use MailPoet\Models\Subscriber;
 use MailPoet\Segments\WP;
 use MailPoet\Models\Setting;
 use MailPoet\Settings\Pages;
+use MailPoet\Subscribers\Source;
 use MailPoet\Util\Helpers;
 
 if(!defined('ABSPATH')) exit;
@@ -65,6 +68,7 @@ class Populator {
     $this->createDefaultSegments();
     $this->createDefaultSettings();
     $this->createMailPoetPage();
+    $this->createSourceForSubscribers();
   }
 
   private function createMailPoetPage() {
@@ -333,4 +337,19 @@ class Populator {
       )
     );
   }
+
+  private function createSourceForSubscribers() {
+    Subscriber::rawExecute(
+      ' UPDATE LOW_PRIORITY `' . Subscriber::$_table . '` subscriber ' .
+      ' JOIN `' . StatisticsForms::$_table . '` stats ON stats.subscriber_id=subscriber.id ' .
+      ' SET `source` = "' . Source::FORM . '"' .
+      ' WHERE `source` = "' . Source::UNKNOWN . '"'
+    );
+    Subscriber::rawExecute(
+      'UPDATE LOW_PRIORITY `' . Subscriber::$_table . '`' .
+      ' SET `source` = "' . Source::WORDPRESS_USER . '"' .
+      ' WHERE `source` = "' . Source::UNKNOWN . '"' .
+      ' AND `wp_user_id` IS NOT NULL'
+    );
+  }
 }
diff --git a/lib/Subscribers/ImportExport/PersonalDataExporters/SubscriberExporter.php b/lib/Subscribers/ImportExport/PersonalDataExporters/SubscriberExporter.php
index a63212d8a7..4543c67440 100644
--- a/lib/Subscribers/ImportExport/PersonalDataExporters/SubscriberExporter.php
+++ b/lib/Subscribers/ImportExport/PersonalDataExporters/SubscriberExporter.php
@@ -4,6 +4,7 @@ namespace MailPoet\Subscribers\ImportExport\PersonalDataExporters;
 
 use MailPoet\Models\CustomField;
 use MailPoet\Models\Subscriber;
+use MailPoet\Subscribers\Source;
 
 class SubscriberExporter {
 
@@ -70,6 +71,12 @@ class SubscriberExporter {
         );
       }
     }
+
+    $result[] = array(
+      'name' => __("Subscriber's subscription source", 'mailpoet'),
+      'value' => $this->formatSource($subscriber->source),
+    );
+
     return $result;
   }
 
@@ -82,4 +89,21 @@ class SubscriberExporter {
     return $result;
   }
 
+  private function formatSource($source) {
+    switch ($source) {
+      case Source::WORDPRESS_USER:
+        return __('Subscriber information synchronized via WP user sync', 'mailpoet');
+      case Source::FORM:
+        return __('Subscription via a MailPoet subscription form', 'mailpoet');
+      case Source::API:
+        return __('Added by a 3rd party via MailPoet 3 API', 'mailpoet');
+      case Source::ADMINISTRATOR:
+        return __('Created by the administrator', 'mailpoet');
+      case Source::IMPORTED:
+        return __('Imported by the administrator', 'mailpoet');
+      default:
+        return __('Unknown', 'mailpoet');
+    }
+  }
+
 }
\ No newline at end of file
diff --git a/tests/unit/Subscribers/ImportExport/PersonalDataExporters/SubscriberExporterTest.php b/tests/unit/Subscribers/ImportExport/PersonalDataExporters/SubscriberExporterTest.php
index d5fbfc40f8..dec36afde9 100644
--- a/tests/unit/Subscribers/ImportExport/PersonalDataExporters/SubscriberExporterTest.php
+++ b/tests/unit/Subscribers/ImportExport/PersonalDataExporters/SubscriberExporterTest.php
@@ -48,10 +48,27 @@ class SubscriberExporterTest extends \MailPoetTest {
       array('name' => 'Email', 'value' => 'email.that@has.no.custom.fields'),
       array('name' => 'Status', 'value' => 'unconfirmed'),
       array('name' => 'Created at', 'value' => '2018-05-03 10:30:08'),
+      array('name' => "Subscriber's subscription source", 'value' => 'Unknown'),
     );
     expect($result['data'][0]['data'])->equals($expected);
   }
 
+  function testExportSubscriberWithSource() {
+    Subscriber::createOrUpdate(array(
+      'email' => 'email.with@source.com',
+      'first_name' => 'John',
+      'last_name' => 'Doe',
+      'status' => 'unconfirmed',
+      'created_at' => '2018-05-03 10:30:08',
+      'source' => 'form',
+    ));
+    $result = $this->exporter->export('email.with@source.com');
+    expect($result['data'][0]['data'])->contains(array(
+      'name' => "Subscriber's subscription source",
+      'value' => 'Subscription via a MailPoet subscription form'
+    ));
+  }
+
   function testExportSubscriberWithIPs() {
     Subscriber::createOrUpdate(array(
       'email' => 'email.that@has.ip.addresses',
@@ -67,6 +84,7 @@ class SubscriberExporterTest extends \MailPoetTest {
     expect($result['data'][0]['data'])->contains(array('name' => 'Confirmed IP', 'value' => 'IP2'));
   }
 
+
   function testExportSubscriberWithCustomField() {
     $subscriber = Subscriber::createOrUpdate(array(
       'email' => 'email.that@has.custom.fields',