You may have used the correct envelopes…But, for other people who have just registered their Lexmark printer(s) for the Lexmark Rewards program, please make sure you request personalized, postage-paid return envelopes from the lexmarkrewards.com site which is where you view your purchase status and return status-do not use the recycling envelopes contained within the cartridge box at time of purchase-you have to use the ones that you request from the lexmarkrewards.com site.

I have already received 3 free ink cartridges so far over the past year and a half. The first 2 free ones were for purchasing 10 ink cartridges directly from lexmark.com website and the 3rd free ink cartridge was from returning 5 ink cartridges. Also, Cartridges do not have to have been purchased from Lexmark to be eligible for the return program, so if you purchase 5 Lexmark ink cartridges from Walmart etc., you can return the resulting 5 empty ink cartridges foe a free ink cartridge as long as you have registered your printer(s) in the Lexmark Rewards program. But, in order to receive a free ink cartridge for purchasing 5 Lexmark ink cartridges, you do have to purchase your ink cartridges directly from Lexmark and the prices are about the same as elsewhere. So, if you purchase all your ink from Lexmark, you get 2 free ink cartridges for every 5 you buy and return which for me, was like getting $105.00 back because the 43xl ink cartridges for my X7550 All-In-One printer are $34.99 a piece and I received 3 of those over the past year and a half. You can combine more than one printer in the program-I have my P6350 printer registered in the program as well.

Gordon, Lexmark should be able to work with you on that, because when I purchased my first 2 ink cartridges from Lexmark, they did not show up on my Lexmark Rewards status page after a few weeks, but I called Lexmark and they straigtened it out for me.