What must Enhanced Carrier Route mailings be marked with?

Enhanced Carrier Route (ECR) mailings are designed to optimize delivery and reduce costs for mail sent to specifically targeted geographic areas. To identify these mailings correctly and ensure they receive the appropriate processing and discounts, they must be marked with specific codes that inform postal workers of their classification.

The terms ECRLOT, ECRWSH, and ECRWSS are standardized notations used to denote different types of Enhanced Carrier Route mail. Each designation specifies the nature of the mailing and helps in sorting and delivering the mail more efficiently. For example, ECRWSS indicates that the mail can be delivered to every address on the carrier route, no matter if there is a current occupant or not, facilitating broader distribution.

Recognizing these designations is crucial for mailers to ensure compliance with postal regulations and to benefit from the associated cost savings and delivery efficiencies that come with ECR mailings. Therefore, the requirement for these specific markings ensures that mail is processed correctly through the postal system and reaches its intended audience in a timely manner.