MAILERS+4® 48-Month NCOALink® CASS & PAVE Certified Mailing Software

Reduce Undeliverable Mail and Lower Postage Costs

MAILERS+4® Online Training Seminars: Mail Smarter Series

MAILERS+4 is an affordable, easy-to-use postal automation and bulk mail software program that includes real-time USPS® NCOALink® and Canada Post NCOA® Move-Update processing. MAILERS+4 verifies and standardizes addresses, dedupes your lists, and presorts your mailings for maximum discounts and direct-mail savings. MAILERS+4 will also append known suite or apartment numbers based on last name, and identify vacant properties (not occupied for at least 90 days and not receiving mail). MAILERS+4 includes Mail.dat® for free. And MAILERS+4 now includes Canadian Addresser and RBDI for free! That's a value worth $1380!


  • Increase address quality in your database with move update processing
  • Speed postal processing and delivery
  • Get lowest postage rates
  • Reduce waste—eliminate costly duplicates and undeliverables
  • Enhance material handling costs, safety, and delivery with palletization


  • AddressPlus adds missing suite/apt. numbers
  • RBDI to identify address as business or residence
  • Canadian Addresser to verify Canadian addresses
  • Mail.dat® included for free
  • Palletization options for First-Class and Standard Mail®

CASS Certified Engine

MAILERS+4’s CASS Certified engine scrubs your data by verifying and correcting delivery address elements against the DPV®, LACSLink®, and SuiteLink® files, and standardizes the address to USPS® specs. It then adds missing postal data including ZIP + 4® codes and carrier route numbers, delivery points, and more.

PAVE Gold Certified Postal Presorting

MAILERS+4 presorts your mailings for both automation and nonautomation rate discounts for First-Class, Standard, nonprofit, and Periodicals mail, including destination discounts.Palletization option available.

Postal Presorting

NCOALink® —Effective Change-of-Address Processing

NCOALink with real-time access to a database of 160 million change-of-address records dating back 48 months meets the Move Update requirement for First-Class and Standard Mail. Update addresses before printing or mailing.

Duplicate Elimination

MAILERS+4 can save you money on printing and postage by eliminating costly duplicate records in a single mailing list or across multiple lists.

Intelligent Mail® for MAILERS+4

MAILERS+4 incorporates Intelligent Mail barcode technology and qualifies letter- and flat-sized mail pieces for automation rates.

The Complete Marketing Toolkit

MAILERS+4 provides all the direct marketing tools you need to build your next campaign – in one box. With MAILERS+4, you get one-click access to:

  • Email and phone append services to fill in the gaps in your data
  • Targeted mailing lists you can order and download in minutes

MAILERS+4 is available as a monthly recurring subscription for $80/month for the Standard version and $160/month for the Professional version.

For your convenience, Melissa Data accepts MasterCard and Visa payments online. We also offer Automated Recurring Billing (ARB) which automatically charges your credit card each month to ensure uninterrupted service. You can cancel at anytime.

If you would prefer to prepay and save, call 1-800-800-MAIL to speak with customer service about an annual subscription.

Add-ons for MAILERS+4 include support for:

MAILERS+4® CASS Certified Mailing Software Free Trial