Abstract: A multi-component mailer and personalizing method therefor, achieved by sequentially passing a continuous web of plural, physically connected mailer configurations through a printing station, where each said mailer configuration includes a front sheet member having a window therein and an insert member behind said window, and applying personalized data to said front sheet and to said insert sheet of each said mailer configuration while each said mailer configuration is at said printer station during its passage therethrough. Each mailer configuration further includes left and right longitudinal marginal tear strips as part of its said front sheet, with a series of printer feed holes in each said marginal tear strip, and a back sheet member located behind said insert sheet and affixed to said front sheet, where the transverse width of said back sheet is not greater than and, preferably, is less than the transverse distance between said marginal tear strips.