Details.
Eligible mailers who incorporate a multi-sensory experience, such as special visual effects, sound, scent, texture or tactile treatments, or taste, into their mailpiece may receive a basic 3% or advanced 5% postage discount. The promotion runs January 1, 2027 through June 30, 2027, with registration from October 15, 2026 through June 30, 2027. Eligible mail includes Marketing Mail letters and flats, Nonprofit USPS Marketing Mail letters and flats, and First-Class Mail letters, cards, and flats.