Stamp Collecting "On Approval" is a time-honored, easy, and fun way to collect stamps. Just send us your name, address, and interests, and we will hand-pick a selection for you from our vast inventory. Wilton pays domestic return postage, and our outgoing mail features real postage stamps, not meter strips! After reviewing your selection, just make your choices, and return using our postage paid return envelope. Continue forever, or cancel any time. Please return within 14 days. Your next set will be custom picked based on your comments and purchasing history.