diff --git a/classes/class-connectors.php b/classes/class-connectors.php
index 588206f89..a748f5041 100644
--- a/classes/class-connectors.php
+++ b/classes/class-connectors.php
@@ -76,6 +76,7 @@ public function load_connectors() {
 			'edd',
 			'gravityforms',
 			'jetpack',
+			'mercator',
 			'user-switching',
 			'woocommerce',
 			'wordpress-seo',
diff --git a/connectors/class-connector-mercator.php b/connectors/class-connector-mercator.php
new file mode 100644
index 000000000..ac41c29a0
--- /dev/null
+++ b/connectors/class-connector-mercator.php
@@ -0,0 +1,221 @@
+<?php
+
+namespace WP_Stream;
+
+class Connector_Mercator extends Connector {
+	/**
+	 * Connector slug
+	 *
+	 * @var string
+	 */
+	public $name = 'mercator';
+
+	/**
+	 * Actions registered for this connector
+	 *
+	 * @var array
+	 */
+	public $actions = array(
+		'mercator.mapping.updated',
+		'mercator.mapping.deleted',
+		'mercator.mapping.created',
+		'mercator.mapping.made_primary',
+	);
+
+	/**
+	 * Register connector in the WP Frontend
+	 *
+	 * @var bool
+	 */
+	public $register_frontend = false;
+
+	/**
+	 * Return translated connector label
+	 *
+	 * @return string
+	 */
+	public function get_label() {
+		return esc_html__( 'Mercator' );
+	}
+
+	/**
+	 * Return translated action labels
+	 *
+	 * @return array
+	 */
+	public function get_action_labels() {
+		return array(
+			'made_primary' => esc_html__( 'Make primary domain', 'stream' ),
+			'created'      => esc_html__( 'Created', 'stream' ),
+			'deleted'      => esc_html__( 'Deleted', 'stream' ),
+			'updated'      => esc_html__( 'Updated', 'stream' ),
+		);
+	}
+
+	/**
+	 * Return translated context labels
+	 *
+	 * @return array
+	 */
+	public function get_context_labels() {
+		$labels = array();
+
+		if ( is_multisite() && ! wp_is_large_network() ) {
+			$blogs = wp_stream_get_sites();
+
+			foreach ( $blogs as $blog ) {
+				$blog_details   = get_site( $blog->blog_id );
+				$key            = sanitize_key( $blog_details->blogname );
+				$labels[ $key ] = $blog_details->blogname;
+			}
+		}
+
+		return $labels;
+	}
+
+	/**
+	 * Add action links to Stream drop row in admin list screen
+	 *
+	 * @filter wp_stream_action_links_{connector}
+	 *
+	 * @param array $links
+	 * @param Record $record
+	 *
+	 * @return array
+	 */
+	public function action_links( $links, $record ) {
+		$links [ esc_html__( 'Site Admin' ) ] = get_admin_url( $record->object_id );
+
+		if ( $record->object_id ) {
+			$site_admin_link = get_admin_url( $record->object_id );
+
+			if ( $site_admin_link ) {
+				$links [ esc_html__( 'Site Admin' ) ] = $site_admin_link;
+			}
+
+			$site_settings_link = add_query_arg(
+				array(
+					'id'     => $record->object_id,
+					'action' => 'mercator-aliases',
+				),
+				network_admin_url( 'admin.php' )
+			);
+
+			if ( $site_settings_link ) {
+				$links [ esc_html__( 'Domain mapping Settings', 'stream' ) ] = $site_settings_link;
+			}
+		}
+
+		return $links;
+	}
+
+	/**
+	 * Log if domain is made primary.
+	 *
+	 * @param $mapping
+	 */
+	public function callback_mercator_mapping_made_primary( $mapping ) {
+		$blog_id = $mapping->get_site_id();
+		$blog    = get_site( $blog_id );
+
+		$this->log(
+			// translators: Placeholder refers to site name (e.g. "FooBar Blog")
+			_x(
+				'"%1$s" domain alias was make primary for "%2$s"',
+				'1. Domain alias 2. Site name',
+				'stream'
+			),
+			array(
+				'domain'    => $mapping->get_domain(),
+				'site_name' => $blog->blogname,
+			),
+			$blog_id,
+			sanitize_key( $blog->blogname ),
+			'made_primary'
+		);
+	}
+
+	/**
+	 * Log if domain alias is updated.
+	 *
+	 * @param $mapping
+	 * @param $old_mapping
+	 */
+	public function callback_mercator_mapping_updated( $mapping, $old_mapping ) {
+
+		$blog_id = $mapping->get_site_id();
+		$blog    = get_site( $blog_id );
+
+		$this->log(
+			// translators: Placeholder refers to site name (e.g. "FooBar Blog")
+			_x(
+				'The domain alias "%1$s" was updated to "%2$s" for site "%3$s"',
+				'1. Old Domain alias 2. Domain alias 2. Site name',
+				'stream'
+			),
+			array(
+				'old_domain' => $old_mapping->get_domain(),
+				'domain'     => $mapping->get_domain(),
+				'site_name'  => $blog->blogname,
+			),
+			$blog_id,
+			sanitize_key( $blog->blogname ),
+			'updated'
+		);
+
+	}
+
+	/**
+	 * Log if domain alias is deleted.
+	 *
+	 * @param $mapping
+	 */
+	public function callback_mercator_mapping_deleted( $mapping ) {
+
+		$blog_id = $mapping->get_site_id();
+		$blog    = get_site( $blog_id );
+
+		$this->log(
+			// translators: Placeholder refers to site name (e.g. "FooBar Blog")
+			_x(
+				'"%1$s" domain alias was deleted for "%2$s"',
+				'1. Domain alias 2. Site name',
+				'stream'
+			),
+			array(
+				'domain'    => $mapping->get_domain(),
+				'site_name' => $blog->blogname,
+			),
+			$blog_id,
+			sanitize_key( $blog->blogname ),
+			'deleted'
+		);
+
+	}
+
+	/**
+	 * Log if domain alias is created.
+	 *
+	 * @param $mapping
+	 */
+	public function callback_mercator_mapping_created( $mapping ) {
+		$blog_id = $mapping->get_site_id();
+		$blog    = get_site( $blog_id );
+
+		$this->log(
+			// translators: Placeholder refers to site name (e.g. "FooBar Blog")
+			_x(
+				'"%1$s" domain alias was created for "%2$s"',
+				'1. Domain alias 2. Site name',
+				'stream'
+			),
+			array(
+				'domain'    => $mapping->get_domain(),
+				'site_name' => $blog->blogname,
+			),
+			$blog_id,
+			sanitize_key( $blog->blogname ),
+			'created'
+		);
+	}
+}