diff --git a/README.txt b/README.txt
index 99e334f..66fd708 100644
--- a/README.txt
+++ b/README.txt
@@ -1,15 +1,24 @@
 INTRODUCTION
 ------------
 
-This project is part of the Drupal Social Initiative (https://groups.drupal.org/social-initiative).
+This project is part of the Drupal Social Initiative
+(https://groups.drupal.org/social-initiative).
 
-Social Auth is part of the Social API. It provides a common interface for creating modules related to user registration/login through social networks' accounts.
+Social Auth is part of the Social API. It provides a common interface for
+creating modules related to user registration/login through social networks'
+accounts.
 
- * This module defines a path /admin/config/social-api/social-auth which displays a table of implementers (modules to register/login through social networks' accounts).
+ * This module defines a path /admin/config/social-api/social-auth which
+   displays a table of implementers (modules to register/login through social
+   networks' accounts).
 
- * It also provides a block Social Auth Login which contains links to login users through the enabled social networks' module clients
+ * It also provides a block Social Auth Login which contains links to login
+   users through the enabled social networks' module clients
 
- * Alternatively, site builders can place (and theme) a link to user/login/{social_network} wherever on the site. This path are added by the implementers. For instance Social Auth Facebook will add the path user/login/facebook
+ * Alternatively, site builders can place (and theme) a link to 
+   user/login/{social_network} wherever on the site. This path are added by the
+   implementers. For instance Social Auth Facebook will add the path
+   user/login/facebook
 
 REQUIREMENTS
 ------------
@@ -22,19 +31,22 @@ INSTALLATION
 ------------
 
  * Install as you would normally install a contributed Drupal module. See:
-   https://www.drupal.org/docs/8/extending-drupal-8/installing-contributed-modules-find-import-enable-configure-drupal-8
-   for further information.
+   https://www.drupal.org/node/1897420 for further information.
 
 CONFIGURATION
 -------------
 
- * A table of implementers will be displayed at Administration » Configuration » Social API Settings » User authentication. However, it will be empty as we have not enabled an implementer yet.
+ * A table of implementers will be displayed at Administration » Configuration »
+   Social API Settings » User authentication. However, it will be empty as we 
+   have not enabled an implementer yet.
 
  * You should install implementer modules to get this module start working.
 
- * You can place a Social Auth Login block at Administration » Structure » Block layout.
+ * You can place a Social Auth Login block at Administration » Structure »
+   Block layout.
 
- * You can find a more comprehensive guide in the Social Auth documentation (https://www.drupal.org/node/2763731)
+ * You can find a more comprehensive guide in the Social Auth documentation
+   (https://www.drupal.org/node/2763731)
 
 MAINTAINERS
 -----------
diff --git a/social_auth.services.yml b/social_auth.services.yml
index deae7f7..6d5782b 100644
--- a/social_auth.services.yml
+++ b/social_auth.services.yml
@@ -4,6 +4,7 @@ services:
     arguments:
       - '@config.factory'
       - '@logger.factory'
+      - '@event_dispatcher'
       - '@entity_type.manager'
       - '@entity_field.manager'
       - '@token'
diff --git a/src/Event/SocialAuthEvents.php b/src/Event/SocialAuthEvents.php
new file mode 100644
index 0000000..56f68f6
--- /dev/null
+++ b/src/Event/SocialAuthEvents.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace Drupal\social_auth\Event;
+
+/**
+ * Defines Social Auth Events constants.
+ */
+final class SocialAuthEvents {
+  /**
+   * Name of the event fired when social auth is gathering user fields.
+   *
+   * Fired before a new user is created when gathering fields.
+   *
+   * @see \Drupal\social_auth\Event\SocialAuthUserFieldsEvent
+   *
+   * @var array
+   */
+  const USER_FIELDS = 'social_auth.user.fields';
+
+  /**
+   * Name of the event fired when a new user is created via social auth.
+   *
+   * Fired after a new user account has been created.
+   *
+   * @Event
+   *
+   * @see \Drupal\social_auth\Event\SocialAuthUserEvent
+   *
+   * @var string
+   */
+  const USER_CREATED = 'social_auth.user.created';
+
+  /**
+   * Name of the event fired when a new user login using social auth.
+   *
+   * Fired after a user has logged in.
+   *
+   * @Event
+   *
+   * @see \Drupal\social_auth\Event\SocialAuthUserEvent
+   *
+   * @var string
+   */
+  const USER_LOGIN = 'social_auth.user.login';
+
+}
diff --git a/src/Event/SocialAuthUserEvent.php b/src/Event/SocialAuthUserEvent.php
new file mode 100644
index 0000000..fcc3276
--- /dev/null
+++ b/src/Event/SocialAuthUserEvent.php
@@ -0,0 +1,62 @@
+<?php
+
+namespace Drupal\social_auth\Event;
+
+use Drupal\user\Entity\User;
+use Symfony\Component\EventDispatcher\Event;
+
+/**
+ * Class SocialAuthEvent.
+ *
+ * @see \Drupal\social_auth\Event\SocialAuthEvents
+ */
+class SocialAuthUserEvent extends Event {
+
+  /**
+   * The user.
+   *
+   * @var \Drupal\user\Entity\User
+   */
+  protected $user;
+
+  /**
+   * The plugin id dispatching this event.
+   *
+   * @var string
+   */
+  protected $pluginId;
+
+  /**
+   * Constructs a new SocialAuthEvent.
+   *
+   * @param \Drupal\user\Entity\User $user
+   *   The user.
+   * @param string $plugin_id
+   *   The plugin Id dispatching this event.
+   */
+  public function __construct(User $user, $plugin_id) {
+    $this->user = $user;
+    $this->plugin_id = $pluginId;
+  }
+
+  /**
+   * Gets the user.
+   *
+   * @return \Drupal\user\UserInterface
+   *   The user.
+   */
+  public function getUser() {
+    return $this->user;
+  }
+
+  /**
+   * Gets the plugin id dispatching this event.
+   *
+   * @return string
+   *   The plugin id.
+   */
+  public function getPluginId() {
+    return $this->pluginId;
+  }
+
+}
diff --git a/src/Event/SocialAuthUserFieldsEvent.php b/src/Event/SocialAuthUserFieldsEvent.php
new file mode 100644
index 0000000..5911461
--- /dev/null
+++ b/src/Event/SocialAuthUserFieldsEvent.php
@@ -0,0 +1,73 @@
+<?php
+
+namespace Drupal\social_auth\Event;
+
+use Symfony\Component\EventDispatcher\Event;
+
+/**
+ * Defines the user fields event.
+ *
+ * @todo validate user_fields to be set
+ *
+ * @see \Drupal\social_auth\Event\SocialAuthEvents
+ */
+class SocialAuthUserFieldsEvent extends Event {
+
+  /**
+   * The user fields.
+   *
+   * @var array
+   */
+  protected $userFields;
+
+  /**
+   * The plugin id dispatching this event.
+   *
+   * @var string
+   */
+  protected $pluginId;
+
+  /**
+   * Constructs a new SocialAuthUserFieldsEvent.
+   *
+   * @param array $user_fields
+   *   Initial user fields to populate the newly created user.
+   * @param string $plugin_id
+   *   The plugin Id dispatching this event.
+   */
+  public function __construct(array $user_fields, $plugin_id) {
+    $this->userFields = $user_fields;
+    $this->pluginId = $plugin_id;
+  }
+
+  /**
+   * Gets the user fields.
+   *
+   * @return array
+   *   Fields to initialize for the user creation.
+   */
+  public function getUserFields() {
+    return $this->userFields;
+  }
+
+  /**
+   * Sets the user fields.
+   *
+   * @param array $user_fields
+   *   The user fields.
+   */
+  public function setUserFields(array $user_fields) {
+    $this->userFields = $user_fields;
+  }
+
+  /**
+   * Gets the plugin id dispatching this event.
+   *
+   * @return string
+   *   The plugin id.
+   */
+  public function getPluginId() {
+    return $this->pluginId;
+  }
+
+}
diff --git a/src/SocialAuthUserManager.php b/src/SocialAuthUserManager.php
index db6df55..621c075 100644
--- a/src/SocialAuthUserManager.php
+++ b/src/SocialAuthUserManager.php
@@ -2,26 +2,31 @@
 
 namespace Drupal\social_auth;
 
+use Drupal\Core\Entity\EntityFieldManagerInterface;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Drupal\Core\StringTranslation\TranslationInterface;
+use Drupal\Core\Transliteration\PhpTransliteration;
+use Drupal\Core\Utility\Token;
+use Drupal\social_auth\Event\SocialAuthUserEvent;
+use Drupal\social_auth\Event\SocialAuthEvents;
+use Drupal\social_auth\Event\SocialAuthUserFieldsEvent;
 use Drupal\user\Entity\User;
 use Drupal\user\UserInterface;
 use Drupal\Core\Config\ConfigFactoryInterface;
 use Drupal\Core\Logger\LoggerChannelFactoryInterface;
 use Drupal\Core\Entity\EntityTypeManagerInterface;
 use Drupal\Core\Entity\EntityStorageException;
-use Drupal\Core\Entity\EntityFieldManagerInterface;
-use Drupal\Core\Utility\Token;
-use Drupal\Core\StringTranslation\StringTranslationTrait;
-use Drupal\Core\StringTranslation\TranslationInterface;
-use Drupal\Core\Transliteration\PhpTransliteration;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 
 /**
  * Contains all logic that is related to Drupal user management.
  */
 class SocialAuthUserManager {
   use StringTranslationTrait;
-  
+
   protected $configFactory;
   protected $loggerFactory;
+  protected $eventDispatcher;
   protected $entityTypeManager;
   protected $entityFieldManager;
   protected $token;
@@ -33,20 +38,25 @@ class SocialAuthUserManager {
    *
    * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
    *   Used for accessing Drupal configuration.
+   * @param \Drupal\Core\Logger\LoggerChannelFactoryInterface $logger_factory
+   *   Used for logging errors.
+   * @param \Symfony\Component\EventDispatcher\EventDispatcherInterface $event_dispatcher
+   *   Used for dispatching social auth events @see \Drupal\social_auth\Event\SocialAuthEvents
    * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
    *   Used for loading and creating Drupal user objects.
    * @param \Drupal\Core\Entity\EntityFieldManagerInterface $entity_field_manager
    *   Used for access Drupal user field definitions.
    * @param \Drupal\Core\Utility\Token $token
    *   Used for token support in Drupal user picture directory.
-   *  @param \Drupal\Core\StringTranslation\TranslationInterface $string_translation
+   * @param \Drupal\Core\StringTranslation\TranslationInterface $string_translation
    *   Used for translating strings in UI messages.
    * @param \Drupal\Core\Transliteration\PhpTransliteration $transliteration
    *   Used for user picture directory and file transliteration.
    */
-  public function __construct(ConfigFactoryInterface $config_factory, LoggerChannelFactoryInterface $logger_factory, EntityTypeManagerInterface $entity_type_manager, EntityFieldManagerInterface $entity_field_manager, Token $token, TranslationInterface $string_translation, PhpTransliteration $transliteration) {
+  public function __construct(ConfigFactoryInterface $config_factory, LoggerChannelFactoryInterface $logger_factory, EventDispatcherInterface $event_dispatcher, EntityTypeManagerInterface $entity_type_manager, EntityFieldManagerInterface $entity_field_manager, Token $token, TranslationInterface $string_translation, PhpTransliteration $transliteration) {
     $this->configFactory      = $config_factory;
     $this->loggerFactory      = $logger_factory;
+    $this->eventDispatcher    = $event_dispatcher;
     $this->entityTypeManager  = $entity_type_manager;
     $this->entityFieldManager = $entity_field_manager;
     $this->token              = $token;
@@ -90,42 +100,36 @@ class SocialAuthUserManager {
    *   User's name on Provider.
    * @param string $email
    *   User's email address.
+   * @param string $plugin_id
+   *   Plugin ID creating the user.
    *
    * @return \Drupal\user\Entity\User|false
    *   Drupal user account if user was created
    *   False otherwise
    */
-  public function createUser($name, $email) {
+  public function createUser($name, $email, $plugin_id = 'social_auth') {
     // Make sure we have everything we need.
     if (!$name || !$email) {
       $this->loggerFactory
-        ->get('social_auth')
+        ->get($plugin_id)
         ->error('Failed to create user. Name: @name, email: @email', array('@name' => $name, '@email' => $email));
       return FALSE;
     }
 
     // Check if site configuration allows new users to register.
     if ($this->registrationBlocked()) {
-
       $this->loggerFactory
-        ->get('social_auth')
+        ->get($plugin_id)
         ->warning('Failed to create user. User registration is disabled in Drupal account settings. Name: @name, email: @email.', array('@name' => $name, '@email' => $email));
 
       return FALSE;
     }
 
-    // Set up the user fields.
-    // Username will be user's name on Provider.
-    // - Password can be very long since the user doesn't see this.
-    $fields = array(
-      'name' => $this->generateUniqueUsername($name),
-      'mail' => $email,
-      'init' => $email,
-      'pass' => $this->userPassword(32),
-      'status' => $this->getNewUserStatus(),
-    );
+    // Initializes the user fields.
+    $fields = $this->getUserFields($name, $email, $plugin_id);
 
     // Create new user account.
+    /** @var \Drupal\user\Entity\User $new_user */
     $new_user = $this->entityTypeManager
       ->getStorage('user')
       ->create($fields);
@@ -135,19 +139,22 @@ class SocialAuthUserManager {
       $new_user->save();
 
       $this->loggerFactory
-        ->get('social_auth')
-        ->notice('New user created. Username @username, UID: @uid', array(
+        ->get($plugin_id)
+        ->notice('New user created. Username @username, UID: @uid',[
           '@username' => $new_user->getAccountName(),
-          '@uid' => $new_user->id(),
-        ));
+          '@uid' => $new_user->id()
+        ]);
+
+      // Dipatches SocialAuthEvents::USER_CREATED event.
+      $event = new SocialAuthUserEvent($new_user, $plugin_id);
+      $this->eventDispatcher->dispatch(SocialAuthEvents::USER_CREATED, $event);
 
       return $new_user;
     }
-
     catch (EntityStorageException $ex) {
       $this->loggerFactory
-        ->get('social_auth')
-        ->error('Could not create new user. Exception: @message', array('@message' => $ex->getMessage()));
+        ->get($plugin_id)
+        ->error('Could not create new user. Exception: @message',['@message' => $ex->getMessage()]);
     }
 
     return FALSE;
@@ -163,18 +170,22 @@ class SocialAuthUserManager {
    *   True if login was successful
    *   False if the login was blocked
    */
-  public function loginUser(User $drupal_user) {
-
+  public function loginUser(User $drupal_user, $plugin_id) {
     // Check that the account is active and log the user in.
     if ($drupal_user->isActive()) {
       $this->userLoginFinalize($drupal_user);
 
+      // Dipatches SocialAuthEvents::USER_LOGIN event.
+      $event = new SocialAuthUserEvent($drupal_user, $plugin_id);
+      $this->eventDispatcher->dispatch(SocialAuthEvents::USER_LOGIN, $event);
+
       return TRUE;
     }
 
     $this->loggerFactory
-      ->get('social_auth')
+      ->get($plugin_id)
       ->warning('Login for user @user prevented. Account is blocked.', array('@user' => $drupal_user->getAccountName()));
+
     return FALSE;
   }
 
@@ -269,7 +280,37 @@ class SocialAuthUserManager {
   protected function userLoginFinalize(UserInterface $account) {
     user_login_finalize($account);
   }
-  
+
+  /**
+   * Returns an array of fields to initialize the creation of the user.
+   *
+   * @param string $name
+   *   User's name on Provider.
+   * @param string $email
+   *   User's email address.
+   *
+   * @return array
+   *   Fields to initialize for the user creation.
+   */
+  protected function getUserFields($name, $email, $plugin_id) {
+    // - Password can be very long since the user doesn't see this.
+    $fields = [
+      'name' => $this->generateUniqueUsername($name),
+      'mail' => $email,
+      'init' => $email,
+      'pass' => $this->userPassword(32),
+      'status' => $this->getNewUserStatus(),
+    ];
+
+    // Dispatches SocialAuthEvents::USER_FIELDS, so that other modules can
+    // update this array before an user is saved.
+    $event = new SocialAuthUserFieldsEvent($fields, $plugin_id);
+    $this->eventDispatcher->dispatch(SocialAuthEvents::USER_FIELDS, $event);
+    $fields = $event->getUserFields();
+
+    return $fields;
+  }
+
   /**
    * Downloads and sets user profile picture.
    *
@@ -319,11 +360,9 @@ class SocialAuthUserManager {
     }
 
     // Determine target directory.
-    $scheme = $this->configFactory
-        ->get('system.file')
-        ->get('default_scheme');
+    $scheme = $this->configFactory->get('system.file')->get('default_scheme');
     $file_directory = $this->getPictureDirectory();
-    
+
     if (!$file_directory) {
       return FALSE;
     }
@@ -334,14 +373,14 @@ class SocialAuthUserManager {
 
     // Transliterate directory name.
     $directory = $this->transliteration->transliterate($directory, 'en', '_', 50);
-    
+
     if (!$this->filePrepareDirectory($directory, 1)) {
       $this->loggerFactory
         ->get('social_auth')
-        ->error('Could not save @provider profile picture. Directory is not writable: @directory', array(
+        ->error('Could not save @provider profile picture. Directory is not writable: @directory', [
           '@directory' => $directory,
           '@provider' => $provider,
-        ));
+        ]);
       return FALSE;
     }
 
@@ -354,16 +393,17 @@ class SocialAuthUserManager {
     if (!$file = $this->systemRetrieveFile($picture_url, $destination, TRUE, 1)) {
       $this->loggerFactory
         ->get('social_auth')
-        ->error('Could not download @provider profile picture from url: @url', array(
+        ->error('Could not download @provider profile picture from url: @url', [
           '@url' => $picture_url,
           '@provider' => $provider,
-        ));
+        ]);
+
       return FALSE;
     }
 
     return $file;
   }
-  
+
   /**
    * Returns whether this site supports the default user picture feature.
    *
@@ -378,7 +418,7 @@ class SocialAuthUserManager {
     $field_definitions = $this->entityFieldManager->getFieldDefinitions('user', 'user');
     return isset($field_definitions['user_picture']);
   }
-  
+
   /**
    * Returns picture directory if site supports the user picture feature.
    *
@@ -393,7 +433,7 @@ class SocialAuthUserManager {
     }
     return FALSE;
   }
-  
+
   /**
    * Wrapper for file_prepare_directory.
    *
@@ -417,7 +457,7 @@ class SocialAuthUserManager {
    * @see system_retrieve_file
    */
   protected function systemRetrieveFile($url, $destination, $managed, $replace) {
-   return system_retrieve_file($url, $destination, $managed, $replace);
+    return system_retrieve_file($url, $destination, $managed, $replace);
   }
 
 }