Deliver Smarter. Reach More Mailboxes.

End-to-end consumer list hygiene, NCOA updates, merge/purge, and ready-to-mail preparation — all performed with enterprise-grade accuracy and USPS-compliant standards.

Trusted by national printers & direct-mail teams.

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Data Hygiene

Your mailing list updated, deduped, standardized, and fully prepped — fast and with unmatched accuracy.

Marketing Segmentation

Target the right audiences with precise segmentation to improve response rates.

Data Quality Matters

Your List Data Should Work for You — Not Against You

Most companies overspend on postage and lose response rates because their lists contain outdated, duplicate, or inconsistent data. Our free data review gives you a clear picture of your file’s health—so you can fix problems before you mail.

Request a free data review

👉 No obligation. Secure upload. Actionable insights before you mail.

Problems We Fix

Outdated or undeliverable addresses reduce deliverability and increase postage costs. Duplicate records, whether by individual, household, or address — inflate list counts and distort campaign analytics. Missing hygiene updates, inconsistent file formats, or slow vendor processes further delay production timelines. These issues increase costs and reduce overall campaign performance.

How Datahouse Marketing Fixes It

We standardize every record using CASS/DPV/LACS and 48-month NCOA updates for USPS-approved formatting. Duplicates are removed using both exact matching and fuzzy logic that accounts for spelling, abbreviation, and minor formatting differences. Each file is then reformatted, ZIP+4 coded, and returned clean, consistent, and ready for production.

Our Mailing & Data Processing Services

We provide full-service data hygiene and mailing-list processing to ensure every record is clean, deliverable, deduplicated, and USPS-ready. Explore the core services we offer below.

Merge/Purge Processing

Remove duplicates at the individual, household or address level using exact and fuzzy matching.

Address Validation

Correct and validate addresses using USPS CASS/DPV/LACS to ensure deliverability.

NCOA
(48-Month)

Apply national change-of-address updates to keep your mailing list current and accurate.

ZIP+4 Coding

Add ZIP+4, DPV and carrier route data to ensure accurate postal delivery and reduce mailing errors.

File Reformatting

Clean and standardize your file layouts and fields for accurate, mailshop-ready output.

Why Datahouse for Your Mailing Data

We combine USPS-compliant processing, fast turnaround, and deep data-hygiene expertise so every record you mail is clean, accurate, and ready for production. Data

USPS-Ready Accuracy

USPS-compliant address processing so every record meets postal standards and qualifies for the best available postage rates.

24–48 Hour Turnaround

Fast, reliable processing to keep your campaigns on schedule — even when you’re working with tight production deadlines.

20+ Years of Expertise

Seasoned data specialists ensuring your lists are clean, accurate, and mail-shop ready for every campaign.

Clean, Standardized Outputs

Every file returned in a uniform, organized layout that simplifies production and reduces costly keystroke errors.

Advanced Data Hygiene

Detect and correct inconsistencies, duplicates, and formatting issues before they become expensive mailing problems.

How Our Direct Mail Workflow Works

1
Send Us Your File

Upload your mailing list in any common format — Excel, CSV, text, or database export.

2
We Clean, Standardize & Enhance Your Data

Your file is processed through industry-standard hygiene — including NCOA, CASS/DPV, LACSLink, duplicate removal, ZIP+4 coding, and formatting cleanup.
Optional customizations available: segmentation, DMA suppression, deceased suppression, DSF2, householding, and more.

3
You Receive a USPS-Ready Output

We return a clean, deliverable, deduplicated, mail-shop–ready layout ready for production.

We help small and mid-sized organizations…

Industries We Serve

We help small and mid-sized organizations that rely on accurate, USPS-ready mailing data — without the heavy compliance demands of financial, healthcare, or government institutions.

Marketing Agencies

For agencies that manage mail campaigns and need reliable data cleanup for client projects.

Print Shops & Mail Houses

Ideal for shops offering direct-mail services and wanting a trusted data hygiene partner.

Retail & E-Commerce Brands

Perfect for customer reactivation, promotions, and local-area targeting.

Home Services Companies

HVAC, roofing, solar, plumbing — any service provider mailing into defined service regions.

Real Estate Offices

Data for farm lists, new-move-ins, and geographic targeting.

Franchises

Multi-location brands that need consistent, clean lists for local mail campaigns.

Educational Services

Tutoring centers, childcare, adult education — safe non-regulated sectors.

Event & Venue Marketers

Concert halls, event promoters, local attractions sending promotional mailings.

Direct Mail Data FAQs

Answers to common questions about sending, preparing, and processing your mailing data.

We accept Excel, CSV, text files, delimited files, and database exports.
If you’re unsure about your format, send it — our team can work with almost anything.

Most jobs are completed within 24–48 hours, depending on file size and services requested.
Rush processing is available when needed.

Yes. Duplicate removal is included in our standard processing and can be performed at:
— household level
— individual level
— address level
— or customized rules based on your needs.

Our standard hygiene includes NCOA, CASS/DPV/LACSLink validation, duplicate removal, ZIP+4 coding, standardization, and layout cleanup — ensuring a clean, USPS-ready output. asked questions (FAQs).

Yes. We support DMA suppression, deceased suppression, do-not-mail lists, and custom suppression files. You can supply your suppression file or have us manage it for you.

Absolutely. We can segment by geography, attributes in your file, householding logic, or custom business rules — just let us know what you need.

You’ll receive a clean, standardized, deduplicated mailing file in your preferred format —
Excel, CSV, delimited text, or print-shop-ready layout. business rules — just let us know what you need.

Yes. We regularly deliver production-ready files directly to printers and mail shops to ensure seamless workflow and zero delays.

We do not perform presorting ourselves. Most print and mail houses prefer to run their own presorts so they can optimize postage, tray/handling logistics, and drop schedules based on their equipment and workflow.

We provide fully standardized, USPS-compliant data that drops seamlessly into their presort system for maximum accuracy and efficiency. zero delays.