A system for producing removable portions having personalized information, for mass-distributable packets, by single-pass manufacturing, in which a printed web is slit into two ribbons, one of which is then folded and glued upon itself to create a multi-ply ribbon that appears to be of heavier stock than the original paper, and a label containing a magnetic strip is applied. The magnetic strip can be encoded with information personalized to the recipient or the advertiser. Alternatively, the multi-ply ribbon can be created by gluing together multiple ribbons, or by a combination of folding ribbons and gluing ribbons. The multi-ply ribbon is die cut into an inside portion and an outside portion and married to the other ribbon, after which the outside portion is removed, leaving the inner portion as removable portions. Alternatively, the folded ribbon can be kiss cut after it has been married to the other ribbon. The removable portions can be coated or laminated to simulate plastic and can be printed with information personalized for the advertiser or for the recipient.