Message notifications to an accessory from a mobile communication device are provided according to some embodiments of the invention. The GPS location system includes a radio positioning system for determining times-of-arrival at several locations for a radio positioning signal transmitted from a mobile unit and then using the times-of-arrival for determining an RPS-based position and time for the mobile unit. Each unit comprises fiber-reinforced composite material. The front of the head portion includes suture holes while presenting a smooth profile. A pair of braces each extend through the sleeve and comprise a baffle portion located above the pad and a fastening portion below a bottom end of the sleeve. Mail pieces may be processed individually or in a batch using the discussed method and system.