messages_notification_new_message( array|BP_Messages_Message $raw_args = array() )

function messages_notification_new_message( $raw_args = array() ) {
	if ( is_object( $raw_args ) ) {
		$args = (array) $raw_args;
	} else {
		$args = $raw_args;
	}

	// These should be extracted below.
	$recipients    = array();
	$email_subject = $email_content = '';
	$sender_id     = 0;

	// Barf.
	extract( $args );

	if ( empty( $recipients ) ) {
		return;
	}

	$sender_name = bp_core_get_user_displayname( $sender_id );

	if ( isset( $message ) ) {
		$message = wpautop( $message );
	} else {
		$message = '';
	}

	// Send an email to each recipient.
	foreach ( $recipients as $recipient ) {
		if ( $sender_id == $recipient->user_id || 'no' == bp_get_user_meta( $recipient->user_id, 'notification_messages_new_message', true ) ) {
			continue;
		}

		// User data and links.
		$ud = get_userdata( $recipient->user_id );
		if ( empty( $ud ) ) {
			continue;
		}

		$unsubscribe_args = array(
			'user_id'           => $recipient->user_id,
			'notification_type' => 'messages-unread',
		);

		bp_send_email( 'messages-unread', $ud, array(
			'tokens' => array(
				'message_id'  => $id,
				'usermessage' => stripslashes( $message ),
				'message.url' => esc_url( bp_core_get_user_domain( $recipient->user_id ) . bp_get_messages_slug() . '/view/' . $thread_id . '/' ),
				'sender.name' => $sender_name,
				'usersubject' => sanitize_text_field( stripslashes( $subject ) ),
				'unsubscribe' => esc_url( bp_email_get_unsubscribe_link( $unsubscribe_args ) ),
			),
		) );
	}

	/**
	 * Fires after the sending of a new message email notification.
	 *
	 * @since BuddyPress 1.5.0
	 * @deprecated 2.5.0 Use the filters in BP_Email.
	 *                   $email_subject and $email_content arguments unset and deprecated.
	 *
	 * @param array  $recipients    User IDs of recipients.
	 * @param string $email_subject Deprecated in 2.5; now an empty string.
	 * @param string $email_content Deprecated in 2.5; now an empty string.
	 * @param array  $args          Array of originally provided arguments.
	 */
	do_action( 'bp_messages_sent_notification_email', $recipients, '', '', $args );
}