a contractor’s criteria, the platform triggers a personalised physical letter that carries the contractor’s branding, contact details, and message. Greenlight Post manages the workflow from data collection and matching through to printing, stamping, and postal dispatch on a pay-per-letter credit model. It is designed for builders, roofers, window installers, landscapers, electricians, and similar trades that want to contact property owners at the moment planning permission is granted. The service focuses on targeted direct mail rather than generic campaigns and allows users to edit and test their own letter templates through an online dashboard.