Details.
Eligible mailers who incorporate a multi-sensory experience, such as special visual effects, sound, scent, texture or tactile treatments, or taste, in their mailpiece may receive a 5% postage discount. The promotion runs January 1, 2026 through June 30, 2026. Eligible mail includes Marketing Mail letters and flats, Nonprofit USPS Marketing Mail letters and flats, and First-Class Mail letters, cards, and flats.