The Mailbox®, by The Education Center, LLC, specializes in the digital development and electronic distribution of supplemental resource materials for preschool and grade school teachers. The Mailbox publishes and markets The Mailbox® magazine, Learning® magazine, and digital products. It hosts a dynamic website for teachers at TheMailbox.com. The Education Center Media Group, by The Education Center, LLC, connects organizations with influential preschool & grade school teachers through innovative marketing programs. The Education Center Media Group leverages The Mailbox as a distribution channel for reaching teachers on behalf of brands nationwide.