Abstract: An online voice messaging service that integrates all tools needed for an advertising sales representative to resell to their customers, in real time, a blind “ad box” including a temporary anonymous toll-free phone number with attached Internet Voice & Data Messaging (IVDM) service for collecting ad responses, such that the toll-free phone number can be incorporated into the text of the customer's advertisement as it is being booked. The software includes a portal or web interface that facilitates reselling of the service via a channel of resellers, such as media companies with sales representatives that have a service agreement with the service. The software also includes a separate portal for direct sales. Various value-added, user-options are provided including notifications of new messages, the ability to receive rental and/or credit applications, payments from customers, management of multiple ad boxes with one logon, and to retrieve messages as .wav files, emails as .txt files, and faxes as .