Mailers+4

Plans and prices

Every plan, in full

On the record

14-day trial

A trial lets users try the full Professional features of MAILERS+4 for 14 days.docs.melissa.com · read 14 Nov 2026

Canada Post NCOA

It can update Canadian mover addresses using Canada Post NCOA data going back 72 months.melissa.com · read 14 Nov 2026

Canada Post SERP

MAILERS+4 is Canada Post SERP Certified to verify and standardize Canadian addresses.melissa.com · read 14 Nov 2026

CASS checks

Its USPS CASS Certified processing includes DPV, LACSLink, SuiteLink, and Vacant Table checks.melissa.com · read 14 Nov 2026

Data expiration

The November 9, 2026 desktop release lists a database expiration date of January 31, 2027.releasenotes.melissa.com · read 14 Nov 2026

Developer APIs

The Mailers+4 Developer Toolkit combines on-premise and web APIs for a fully automated mailing solution.melissa.com · read 14 Nov 2026

Duplicate removal

Deduplication finds exact matches, sound-alikes, nicknames, initials, and abbreviations, and can household pieces to one address.melissa.com · read 14 Nov 2026

IMB and Mail.dat

It produces Intelligent Mail barcodes for Full Service presort and automation rates and includes a free unique Mail.dat User License Code.melissa.com · read 14 Nov 2026

PAVE Gold presort

It is USPS PAVE Gold certified to presort First-Class, Marketing Mail, and Periodicals and supplies the documentation to include with the mailing.melissa.com · read 14 Nov 2026

RBDI included

Residential/Business Delivery Indicator is included at no extra cost so users can tell a residence from a business.melissa.com · read 14 Nov 2026

Support

Melissa lists Mailers+4 support at [email protected] or 1-800-MELISSA (1-800-635-4772), and desktop releases are monthly.releasenotes.melissa.com · read 14 Nov 2026

USPS NCOALink

It matches lists to the full USPS NCOALink file of over 160 million mover records covering 48 months.melissa.com · read 14 Nov 2026

What it does

MAILERS+4 corrects, verifies, and standardizes U.S. and Canadian addresses, removes duplicates, runs NCOA change-of-address processing, and presorts bulk mail for postal discounts.melissa.com · read 14 Nov 2026

Who it is for

Melissa offers mailing software for mailers sending hundreds of records or tens of millions per month or per year, with per-project and subscription pricing.melissa.com · read 14 Nov 2026

Windows desktop

Mailers+4 Desktop runs on Windows only, while the related web option is used through a browser.melissa.com · read 14 Nov 2026

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