Pingen integration for METAVSHN

Pingen is a Swiss digital-to-physical mail service that converts digital documents into printed, enveloped, and posted letters. It handles the entire physical mail pipeline — from PDF upload through printing, folding, enveloping, franking, and handoff to postal services — with full tracking and delivery confirmation.

The METAVSHN Pingen billing connector automatically sends invoices in paper form to customers who haven't enrolled in eBill or prefer physical mail. After each billing cycle, METAVSHN transmits invoice PDFs to Pingen's API, which prints and mails them via Swiss Post or international postal services to customers in supported countries.

This ensures complete billing coverage — every customer receives their invoice through their preferred channel, whether digital (eBill) or physical (Pingen), all managed automatically within METAVSHN.