Miami-Buy-Request Corp. announced this week an e-mail branding system that allows companies to automatically incorporate their logos in e-mail. Available at www.logorilla.com, the system is designed to link logos to the corporate Web site. In exchange for the free service, Buy-Request gets a link of its own for acquiring new accounts. . The free system is aimed at companies interested in raising the professionalism of their correspondence as well as creating interactive e-mails. The company said the e-mail branding system allows companies to comply with the Electronic Signature Act, which states that commerce documents with proper corporate documentation can be construed as legally binding. The current version of Buy-Request's service works with Microsoft Outlook and Outlook Express. It plans to support additional e-mail programs in the future.