EDDM route counts rarely match bundle sizes. Here's exactly how to bundle a 512-piece route, what goes on the facing slip, and how to avoid getting turned away at the counter.
EDDM
2 guides for community card operators.
EDDM lets you mail an entire postal route without buying a single address. It's also the reason community cards are 9x12 in the first place. Here's how it actually works.