The biggest change is the new administrator interface and the adoption of responsive design. This not only provides a big agency feel to campaigns but saves time too! This is the cleanest and most reliable way to design for all devices at once. The first is relative to the format and the latter is for the template engine. Leave 1/8″ of space around the top and right edge. BMEU Address Label Guidelines «EDDM» must be included after «ECRWSS» on the address label if the mailpiece is 10.5″ to 11.5″ long.