# MaxCASS Plus | CASS Certified Address Validation Software

> USPS CASS Certified address validation software. MaxCASS Plus verifies, corrects and standardizes addresses, adds ZIP + 4 and cuts undeliverable mail.

Source: https://maxcassos.com/
Last updated: 2026-09-24

## Deliver accuracy. Eliminate waste. Power every communication.

**USPS CASS™ Certified address validation software**

MaxCASS Plus is the trusted address validation and correction solution used by leading organizations to keep data accurate, compliant and deliverable, every single time.

- CASS™ Certified
- DPV® · LACSLink® · SuiteLink®
- Batch + real-time

## At a glance

- **USPS CASS™ Certified**: Backed by USPS certification
- **DPV®, LACSLink®, SuiteLink®**: Integrated, not bolted on
- **Millions of records per hour**: Blazing-fast batch processing
- **U.S. & international**: Validation for global records

## What CASS processing fixes in a single address

Unlike simple address checkers, MaxCASS Plus corrects typos, adds missing ZIP + 4 codes and formats every address to USPS standards.

Before: `1 MICROWSOFT, REDMUND WA`
After: `1 MICROSOFT WAY, REDMOND WA 98052-8300`

- Street name misspelling corrected
- City name misspelling corrected
- Street suffix added
- ZIP Code added
- ZIP + 4 add-on added
- Identified as a business address

## By the numbers

- **4–5%** of all mail is undeliverable, by USPS estimates
- **Millions** of records processed per hour in batch mode
- **25+** years of Anchor Software helping companies solve address problems
- **2 modes** batch for mailing lists, real-time for quick address lookups

## A wrong address costs a lot more than a stamp.

Addresses change, typos happen and customer details go stale fast. Multiply one wrong address by thousands of mailings and the costs spiral.

- **Returned mail**: Every undeliverable piece means paying for printing, supplies, postage and staff time, just to have it sent back.
- **Extra fees**: Certified, Priority and Express mail are expensive, especially when a wrong address means sending it again.
- **Missed opportunities**: Customers miss important bills, reminders and offers, leading to frustration and lost business.
- **Compliance risks**: Finance, healthcare, utilities and government have rules about mail delivery. Bad addresses can mean fines and upset regulators.
- **Staff hours**: Someone has to fix problems, correct lists and resend letters, time taken away from more valuable work.

## Simple steps, big results

MaxCASS Plus makes address verification easy, no matter your company's size or volume.

1. **Input your list**: Upload a customer database or spreadsheet, or connect straight from your CRM or billing system.
2. **Verify every address**: Each address is checked against official USPS data, catching typos, outdated addresses and wrong ZIP Codes.
3. **Standardize & correct**: Minor mistakes are fixed and formats updated, so every entry is ready for mail delivery.
4. **Flag problem records**: Addresses that can't be corrected are marked for review, follow-up or removal.
5. **Export clean data**: Download a verified mailing list, accurate and ready for printing and sending.

## Everything you need for top-level address quality

- **CASS™ Certified accuracy**: USPS certification for address matching and coding you can rely on for automation prices.
- **ZIP + 4 & standardization**: Adds missing ZIP + 4 codes, fixes typos and formats every address consistently.
- **DPV®, LACSLink® & SuiteLink®**: Confirm delivery points, convert changed rural-route addresses and append business suite numbers.
- **RDI™ option**: Know whether each address is residential or business before you mail or ship.
- **Geographic data option**: Add geographic data to your address records as an option.
- **Batch & real-time**: Process millions of records per hour, or validate single addresses in real time at sign-up.
- **U.S. & international**: Validate U.S. and international records for accurate communication worldwide.
- **Integrated MaxMover**: Built-in certified NCOALink® interface for change-of-address updates with the MaxMover add-on.
- **Extensive reporting**: User-friendly features and extensive reporting, with multi-platform support.

## Clean, USPS-compliant data, automatically

MaxCASS Plus connects to official postal data, verifies each record, corrects errors and enhances every entry with missing details. It integrates with enterprise systems or runs standalone, processing millions of records without slowing down.

- Fewer failed deliveries and returned mail
- Improved customer satisfaction
- Lowest possible postage rates and all eligible presort discounts
- Stronger analytics built on verified data

## Wherever accurate addresses matter most

- **Government agencies**: Official documents land where they should.
- **Banks & financial services**: Statements and notices reach account holders.
- **Healthcare providers**: Medical bills reach the right patient.
- **Utilities**: Bills reach every service address.
- **Retailers**: Offers and orders reach real customers.
- **Logistics companies**: Deliveries arrive on time, the first time.
- **Statement processors**: High-volume runs, standardized and discounted.
- **Marketers & bulk mailers**: Campaign dollars reach deliverable addresses.

> "Data isn't just numbers. It's the foundation of trust."

An accurate address ensures a medical bill reaches a patient, a delivery arrives on time and an official document lands where it should. Every successful communication begins with correct data.


## Frequently asked questions

### What is CASS certification?

CASS (Coding Accuracy Support System) is the USPS program that tests address-matching software for accurate ZIP Code, ZIP + 4, delivery point and carrier route coding. MaxCASS Plus is CASS Certified.

### Can MaxCASS Plus validate addresses in real time?

Yes. Use batch mode for large mailing lists, or real-time mode for quick address lookups such as online sign-ups and new customer entry.

### Does MaxCASS Plus support international addresses?

Yes. MaxCASS Plus validates both U.S. and international records.

## Contact Anchor Software, LLC

- Request a demo: https://maxcassos.com/contact/
- Phone: (800) 237-1921 or (800) 826-4787
- Email: sales@anchorcomputersoftware.com
- Product sheet (PDF): https://maxcassos.com/media/maxcass-plus-product-sheet.pdf