What is Proximity Mail Marketing?

Proximity Mail Marketing (PMM) is direct-mail marketing in which each campaign is anchored to a completed job at a specific address and mailed to a fixed count of that address's nearest neighboring homes — typically the 100 nearest — rather than to a ZIP code, carrier route, or purchased list. The distance required to reach those homes is the campaign's proximity radius, the category's unit of measurement; each mail piece carries its own tracked response code, so results are measured per household rather than per campaign.