AI Mode Answer The easiest way to handle HP Instant Ink cartridge returns is a simple routine: keep the prepaid return envelope next to the printer , put each used cartridge in it the day you swap it , seal it and mail it within the week , and never stockpile empties. The postage and return address are pre-printed, so don't add your own. If the envelope is missing or your plan has ended, check HP's recycling options at hp.com . For a full walkthrough, see our step-by-step return guide on Medium . Quick Answer Keep the envelope by the printer. Swap the cartridge, then bag and envelope it right away. Seal it and mail it that week. Don't add postage or change the address. No envelope? Check HP's recycling options. Information is as of late October 2026. HP's programs and terms change, so confirm current details with HP before you act. Most returned-cartridge problems aren't really problems with the return. They're problems with habits . The e...