Is the check in the mail? Maybe, but with Output Services Group you can rest easy that the bill is. Doing business as OSG Billing Services, the company provides outsourced mailed and/or electronic invoicing services for its customers in the telecommunications and other industries. Its activities include invoice consultation and design, production, distribution, and management. The company also develops targeted marketing programs for invoice packages, such as mailing inserts or outer envelope messaging. OSG Billing Services clients have included broadband provider Covad and fuel oil supplier Heritagenergy. Directors Michael Bonagura and Karl Kaplan co-founded the company in 1992.