In the June issue of Inc. magazine, we featured an article about AwayFind, a Web app that alerts you by text, push notification, or voice call if you receive an important e-mail. Recently, AwayFind launched a souped-up version of the software for business customers who use Google Apps.

The new app, available in the Google Apps Marketplace, sends out instant alerts, notifying users within seconds, rather than minutes, when an urgent email arrives. The app also offers business-friendly features, including centralized billing and a control panel that lets administrators add users and check the status of accounts.

Cost: After a free 30-day trial, plans start at $10 a month per user, with discounts for yearly subscriptions and multiple users.