Tabbers are mailing machines designed to apply adhesive tabs or wafer seals to folded mail pieces, such as newsletters, brochures, or self-mailers, to meet postal regulations. Commonly used in mailrooms, print shops, and marketing departments, tabbers automate the sealing process, saving time and ensuring consistent application. They support single, double, or triple tabbing and can handle various media sizes and thicknesses. Tabbers help prepare mail for distribution efficiently while maintaining a professional, secure finish.