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Maximizing Postal Efficiency: Unlocking the Power of List Services for Postal Optimization

In today's fast-paced world, businesses are constantly seeking ways to streamline their operations and reduce costs. When it comes to direct mail and postal services, optimizing your mailing list is a key component of achieving these goals. An accurate mailing list can help you save money on postage, reduce undeliverable mail, and improve the overall effectiveness of your marketing campaigns. At Enru, we offer a comprehensive suite of List Services capabilities designed to fine-tune your mailing lists and enhance postal optimization.


  1. File Conversions

Starting with the basics, our File Conversions service ensures that your mailing list is in the most compatible format for postal processing. This ensures smoother and more efficient data handling, setting the stage for further optimization.

  1. Address Hygiene/Standardization

Clean and standardized addresses are crucial for successful mail delivery. We employ Address Hygiene services to correct, validate, and standardize addresses, reducing the risk of returned mail and associated costs.

  1. CASS™ Certification (Coding Accuracy Support System)

Our CASS™ Certification service takes address accuracy to the next level by including Zip+4 and Carrier Route Coding. This certification guarantees that your addresses are up to USPS standards, which not only helps with delivery but also provides postage discounts.

  1. Address Element Correction

Sometimes, addresses contain minor errors or omissions. Our Address Element Correction service ensures that these issues are rectified, further reducing the chances of undeliverable mail.

  1. NCOA (National Change of Address)

People move, and when they do, their address changes. NCOA processing ensures that you have the most up-to-date addresses for your recipients, reducing the likelihood of mail being sent to the wrong location.

  1. Merge/Purge and Dedupe

Duplicate records in your mailing list can be a costly issue. Merge/Purge and Deduplication services eliminate redundancies, saving you money on unnecessary postage.

  1. DSF2 Processing

Our DSF2 Processing service takes advantage of USPS Delivery Sequence File data to achieve even more precise delivery point validation and further improve the quality of your mailing list.

  1. Co-Bind Processing

For businesses with multiple catalog titles, Co-Bind Processing is a game-changer. It merges multiple titles into a single large mailing, optimizing postage savings and simplifying logistics.

  1. Predictive Modeling

Predicting future co-mail pool upgrades is a challenging but highly valuable task. Our Predictive Modeling service helps you make data-driven decisions and maximize the efficiency of your future mailings.

  1. COPS (Carrier Route Optimization Plan for Selectronics)

By filtering records from a large selective bind event and moving them to a single edition event or simplified selective binding event, COPS enables you to fine-tune your mailing for optimal efficiency.

  1. RSO (Run Sequence Optimization)

Efficiency doesn't end with your mailing list. RSO helps optimize the physical logistics of your mailings by reordering trucks and pallets to ensure the first pallet off the bindery line is the first one in the truck and the last one delivered off the truck.

  1. LEO (Letter Entry Optimization)

Splitting mail into Commingle, Co-Pal Tray, and Drop Ship categories is crucial for efficient postal optimization. LEO takes care of this task, helping you minimize postage costs.

  1. Co-Mail Optimization and Co-Mail High-Density Optimization

Leveraging the power of co-mailing, these services bring together various mail pieces from different customers to maximize postage savings and postal efficiency. Co-Mail High-Density Optimization takes it a step further by focusing on high-density mailings for even greater cost savings.

  1. Presort Processing and Optimization

Presort Processing ensures your mail is grouped and labeled according to USPS regulations for maximum postage discounts. Our Optimization service takes this a step further by fine-tuning the presorting process for maximum efficiency.

When it comes to direct mail and postal optimization, every detail counts. By taking advantage of these services, you can not only reduce costs but also improve the quality and reach of your mailings, ultimately leading to more successful marketing campaigns and a better return on investment.

Contact Enru today to learn more about our Postal Optimization strategies.