Can I use the envelope in the cartridge box to return the cartridge for Lexmark Rewards?
No. The postage-paid envelopes you order through the Lexmark Rewards Program are customized with a bar code that uniquely identifies you. It is important you use the Lexmark Rewards Program envelopes (and not the bags in the cartridge box) so that your used cartridge returns are added to your account. You can obtain the personalized Lexmark Rewards postage-paid envelopes by going to LexmarkRewards.com and clicking “Request postage-paid return envelopes”.