Drupal 7.x: Example module that provides an exported rule that will email users assigned to current domain when content is created. (Domain Access, Rules)

email_domain_users.info

name = Email domain users
description = Example module that provides a rule that will email users assigned to current domain.
core = 7.x
dependencies[] = domain
dependencies[] = domain_views
dependencies[] = entity
dependencies[] = node
dependencies[] = rules
dependencies[] = system
dependencies[] = views
dependencies[] = views_bulk_operations

email_domain_users.module

<?php
/**
 * @file
 * Code for the Email domain users module.
 */

/**
 * Implements hook_views_api().
 */
function email_domain_users_views_api($module = NULL, $api = NULL) {
  return array("api" => "3.0");
}

email_domain_users.rules_defaults.inc

<?php
/**
 * @file
 * email_domain_users.rules_defaults.inc
 */

/**
 * Implements hook_default_rules_configuration().
 */
function email_domain_users_default_rules_configuration() {
  $items = array();
  $items['email_domain_users_contributor_creates_content'] = entity_import('rules_config', '{ "email_domain_users_contributor_creates_content" : {
      "LABEL" : "Contributor creates content",
      "PLUGIN" : "reaction rule",
      "OWNER" : "rules",
      "REQUIRES" : [ "rules", "views_bulk_operations" ],
      "ON" : { "node_insert--article" : { "bundle" : "article" } },
      "IF" : [
        { "entity_is_of_bundle" : {
            "entity" : [ "node" ],
            "type" : "node",
            "bundle" : { "value" : { "article" : "article" } }
          }
        }
      ],
      "DO" : [
        { "views_bulk_operations_action_load_id_list" : {
            "USING" : { "view" : "domain_users|default" },
            "PROVIDE" : { "entity_id_list" : { "domain_users_id_list" : "A list of entity ids" } }
          }
        },
        { "LOOP" : {
            "USING" : { "list" : [ "domain-users-id-list" ] },
            "ITEM" : { "domain_user_id" : "Domain user ID" },
            "DO" : [
              { "entity_fetch" : {
                  "USING" : { "type" : "user", "id" : [ "domain-user-id" ] },
                  "PROVIDE" : { "entity_fetched" : { "domain_user_entity" : "Domain user entity" } }
                }
              },
              { "mail" : {
                  "to" : "[domain-user-entity:mail]",
                  "subject" : "A contributor ([node:author]) has created new content! ",
                  "message" : "Dear [domain-user-entity:name],\u000D\u000A\u000D\u000AA contributor has created new content for this domain.\u000D\u000A\u000D\u000AThe author is: [node:author]\u000D\u000A\u000D\u000ATo view the content, click this link (requires log-in): [node:url] \u000D\u000A\u000D\u000A------\u000D\u000AYou are receiving this email because you are assigned as an editor of this domain. \u000D\u000A\u000D\u000AThis email is automatically generated. Please do not reply to it. \u000D\u000A\u000D\u000A",
                  "from" : "[site:name] \\u003C[site:mail]\\u003E",
                  "language" : [ "" ]
                }
              }
            ]
          }
        }
      ]
    }
  }');
  return $items;
}

email_domain_users.views_default.inc

<?php
/**
 * @file
 * email_domain_users.views_default.inc
 */

/**
 * Implements hook_views_default_views().
 */
function email_domain_users_views_default_views() {
  $export = array();

  $view = new view();
  $view->name = 'domain_users';
  $view->description = '';
  $view->tag = 'default';
  $view->base_table = 'users';
  $view->human_name = 'Domain users';
  $view->core = 7;
  $view->api_version = '3.0';
  $view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */

  /* Display: Master */
  $handler = $view->new_display('default', 'Master', 'default');
  $handler->display->display_options['use_more_always'] = FALSE;
  $handler->display->display_options['access']['type'] = 'perm';
  $handler->display->display_options['access']['perm'] = 'access user profiles';
  $handler->display->display_options['cache']['type'] = 'none';
  $handler->display->display_options['query']['type'] = 'views_query';
  $handler->display->display_options['exposed_form']['type'] = 'basic';
  $handler->display->display_options['pager']['type'] = 'none';
  $handler->display->display_options['pager']['options']['offset'] = '0';
  $handler->display->display_options['style_plugin'] = 'default';
  $handler->display->display_options['row_plugin'] = 'fields';
  $handler->display->display_options['row_options']['inline'] = array(
    'uid' => 'uid',
  );
  /* Field: Bulk operations: User */
  $handler->display->display_options['fields']['views_bulk_operations']['id'] = 'views_bulk_operations';
  $handler->display->display_options['fields']['views_bulk_operations']['table'] = 'users';
  $handler->display->display_options['fields']['views_bulk_operations']['field'] = 'views_bulk_operations';
  $handler->display->display_options['fields']['views_bulk_operations']['label'] = '';
  $handler->display->display_options['fields']['views_bulk_operations']['element_label_colon'] = FALSE;
  $handler->display->display_options['fields']['views_bulk_operations']['vbo_settings']['display_type'] = '0';
  $handler->display->display_options['fields']['views_bulk_operations']['vbo_settings']['enable_select_all_pages'] = 1;
  $handler->display->display_options['fields']['views_bulk_operations']['vbo_settings']['row_clickable'] = 1;
  $handler->display->display_options['fields']['views_bulk_operations']['vbo_settings']['force_single'] = 0;
  $handler->display->display_options['fields']['views_bulk_operations']['vbo_settings']['entity_load_capacity'] = '10';
  /* Sort criterion: User: Created date */
  $handler->display->display_options['sorts']['created']['id'] = 'created';
  $handler->display->display_options['sorts']['created']['table'] = 'users';
  $handler->display->display_options['sorts']['created']['field'] = 'created';
  $handler->display->display_options['sorts']['created']['order'] = 'DESC';
  /* Filter criterion: User: Active */
  $handler->display->display_options['filters']['status']['id'] = 'status';
  $handler->display->display_options['filters']['status']['table'] = 'users';
  $handler->display->display_options['filters']['status']['field'] = 'status';
  $handler->display->display_options['filters']['status']['value'] = '1';
  $handler->display->display_options['filters']['status']['group'] = 1;
  $handler->display->display_options['filters']['status']['expose']['operator'] = FALSE;
  /* Filter criterion: Domain Editor: Domain ID */
  $handler->display->display_options['filters']['domain_id']['id'] = 'domain_id';
  $handler->display->display_options['filters']['domain_id']['table'] = 'domain_editor';
  $handler->display->display_options['filters']['domain_id']['field'] = 'domain_id';
  $handler->display->display_options['filters']['domain_id']['value'] = array(
    '***CURRENT_DOMAIN***' => '***CURRENT_DOMAIN***',
  );
  $translatables['domain_users'] = array(
    t('Master'),
    t('more'),
    t('Apply'),
    t('Reset'),
    t('Sort by'),
    t('Asc'),
    t('Desc'),
    t('- Choose an operation -'),
  );
  $export['domain_users'] = $view;

  return $export;
}