Software developer MailFrontier on Friday unveiled a full release of Matador, its filtering software for junk e-mail, and said it plans to begin charging for the product in December. The introduction of Matador 1.0, which is available for a free 30-day trial at the company's Web site, comes three months after the launch of the beta, or test, version.
The technology--compatible only with Microsoft's Outlook 2000 and 2002 e-mail programs--works by allowing its subscribers to maintain lists of acceptable senders and to vote on e-mail tagged as possible spam to avoid receiving those messages in the future. It can also protect inboxes by e-mailing automated tests to senders who are using technology to mass-mail recipients. The product will cost $29.95 a year. The Palo Alto, Calif.-based company expects to release a beta version for Outlook Express by the end of 2002.