Postal Address Verification

Address Correction API

  • CollaborateMD
  • Teleflora
  • Quest
  • Rooms To Go
  • Southwestern Fundraising

Benefits of Address Correction API

Besides making sure mail carriers can actually deliver your packages, using an address correction API also offers other benefits.

Return On Investment

Return On Investment

Reach customers the first time and improve the results of your mail campaigns. Easily increase your companies ROI.

Decrease Costs

Decrease Costs

Stop wasting money on undeliverable mail and postal returns, and qualify for bulk discounts that save yourself money.

Lightning-Fast Speed

Lightning-Fast Speed

Get bulk USPS address standardization results in just a fraction of a second with our programmable address API.

Data Management

Data Management

Standardize address data and ensure customer information is up-to-date and accurate on a consistent basis.

Great Protection

Great Protection

Reduce fraud by identifying invalid or fake addresses before sending mail and packages to your customers.

Amazing Coverage

Amazing Coverage

Get address standardization coverage for addresses in all U.S. territories, the United States, and even Canada.

How Does the API Correct Postal Addresses?

The Postal Address Verification (PAV) API fixes postal addresses in three basic steps.

" Standardize, Correct, Validate "

Why the Three-Step Process?

Correction alone doesn't guarantee deliverability or validity, which is why CDYNE's PAV API uses (1) Standardization, (2) Correction, and (3) Validation.

What Does CDYNE's PAV API Do?

We help you save time, money, and resources by verifying addresses for deliverability before mail and packages are sent out. PAV helps businesses ensure data quality for all U.S. customers.

More Benefits

  • Corrects spelling errors.
  • Formats with USPS capitalization.
  • Fixes incorrect abbreviations.
  • Formats ZIP Codes to ZIP+4.
  • Identifies missing information.

Examples of Address Correction

Fixes Incorrect Abbreviations

Address Correction API
Address Correction API

Formats to ZIP+4

Address Correction API
Address Correction API

When To Use Address Correction

Address correction services are used in just about every industry. From global corporations to local nonprofits, almost every organization sends mail. To make sure your mail is delivered to the correct address in a timely manner, use an address standardization service.

Address Correction Is Perfect For Every Industry

Debt Collection

Send debt validation notices, DNC confirmations, and more.


Make sure medical bills and test results reach the correct patient.


Reward loyal customers with exclusive discounts and offers.


Mail timely reminders about license renewals and state inspections.

Accurate Addresses For Every Use

  • Mailing Campaigns
  • Subscription Renewals
  • Loyalty Program Sign-Ups
  • Donation Drives
  • Coupons & Sales
  • Absentee Ballots
  • Membership Programs
  • Mail-In Response Forms
  • Banking Information
  • Notices of Intent
  • Appointment Reminders
  • Paper Billing & Fees
  • Company Materials

Address Correction Features

CDYNE's address correction includes features for every business need.

Included Features

DPV Return Code System

Confirm the existence of a specific address.

LACSLink Processing

Update old rural route addresses.

POSTNET Delivery Point Barcodes

Qualify for additional USPS discounts.


Correct and update business records.

Intelligent Mail Barcodes

Qualify for additional USPS discounts.

Optional Features

Residential Delivery Indicator (RDI)

Avoid residential delivery surcharges.

Proper Case Formatting

Return data in proper case format.

Census Data

Includes CMSA, FIPS, and more.

Geolocation Data

Includes area code, time zone, and more.

Legislative Data

Includes congressional district number and more.

Carrier Route (CR)

Take advantage of presort postage discounts.


Qualify for enhanced carrier route presort discounts.

How To Get Address Correction For Your Business

Send your mail to the correct address every time with an address correction software. CDYNE's CASS Certified PAV API maximizes address quality without sacrificing speed or accuracy.

To be USPS CASS Certified, an API must be evaluated on and a achieve a certain level of accuracy in the following areas:

  • ZIP+4 Correction
  • 5-Digit Coding
  • Carrier Route Cording
  • SuiteLink®
  • Delivery Point Validation®
  • Residential Delivery Indicator
  • LACSLink®
  • eLOT®

Sign up today to see how easy it can be to get better data quality.

Speak to Sales

Address Correction Pricing

Pick the plan that works best for you.

No hidden fees and no long-term commitment required.

Best in industry pricing with either our unlimited or per transaction pricing. We will not be undersold*. With CDYNE you get the most accurate and advanced Postal Address Verification API at the absolute best pricing anywhere.

Inquire about volume-based discounts.

Speak to Sales
Some restrictions apply, contact sales for details.

All Plans Include

  • Residential Delivery Indicator
  • Code Documentation
  • HTTPS Protocol
  • Geolocation
  • Instant Address Verification
  • CASS Certification

Why Businesses Choose CDYNE's Address Correction API

CDYNE's API ensures your mail is delivered to the correct address, saving you from worrying about poor campaign quality and incorrect data. We've corrected addresses for hundreds of companies, and have been providing trusted software solutions since 1999.

Volume-Based Pricing

Volume-Based Pricing

With per-transaction pricing and customized plans, our PAV API fits every budget.

Customer Satisfaction

Customer Satisfaction

We strive to provide the best customer service, which is why we offer a SLA.

Great Coverage

Great Coverage

Our PAV API standardizes address all across the U.S., U.S. territories, and even Canada.

Emergency Support

Emergency Support

After-hours emergency? No problem! We offer 24/7 emergency support.

It’s Easy To Get Started

Create your account and receive trial credits for any of our mass communication APIs or software.

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