AccuZIP Product of the Month: ACS Module

CASS Certified address standardization and correction in an API

Stop wasting postage on undeliverable addresses!

AccuZIP's powerful CASS Certified™ RESTful API allows for integrated real-time address validation and correction that integrates directly with your systems.

  • Point of entry address standardization
  • Point of entry address correction
  • Validate a single address or a batch of addresses
  • Fully documented
  • Implement in the language of your choice (sample SDKs available).
  • Professional services and support is available.


AccuZIP's CASS RESTful API supports both single and batch address correction and validation using AccuZIP’s proven CASS Certified validation engine. Test drive it NOW! Just click the button below to see how easy it is to use.

Test Drive CASS RESTful API

To learn more or get pricing information about AccuZIP's CASS RESTful API, fill out our form below and an AccuZIP representative will contact you!

To speak to an AccuZIP representative right away, please call 800.233.0555.



Check out the Past Products of the Month

  POTM September Tags Module
  POTM September EDDM® Every Door Direct Mail
  POTM September Canadian Validation
  POTM July MediaMail® Library Mail
  POTM June AccuZIP Direct Mail Configurator for Enfocus Switch®
  POTM May AccuTag Tray Tag Printer
  POTM April MAC Batch Manifest Variable Weight Presorting Add-On Module
  POTM March Purchase Mailing Lists
  POTM February AccuZIP Developer Toolkit
  POTM January Palletization Module for AccuZIP6
  POTM December AccuZIP Variable Maps
  POTM November ANKLINK 48 Month Change of Address Processing
  POTM October Residential Delivery Indicator (RDI)
  POTM September Z4 Change
  POTM August AccuGeocoder
  POTM July Monthly CASS Updates