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    Variable Addressing - Catdi Printing
    USPS-Certified Addressing

    Variable Addressing

    Every Address. Delivered Right.

    CASS-certified inkjet addressing applied directly to your mail pieces — accurate, fast, and USPS-compliant.

    What Is Variable Addressing?

    Variable addressing uses high-speed inkjet printing to apply a different name, address, and barcode to each mail piece as it moves through the addressing machine. Combined with CASS certification and NCOA processing, it ensures your mail qualifies for automation postage rates and actually reaches its intended recipient.

    Variable addressing is the process of printing each recipient's name and mailing address directly onto postcards, envelopes, flats, and self-mailers using high-speed inkjet technology. Catdi Printing's addressing equipment is CASS-certified and NCOA-processed, ensuring every piece meets USPS standards for postal automation discounts.

    Key Benefits

    Why Catdi Printing clients choose Variable Addressing as part of their mail production workflow.

    CASS-Certified Accuracy

    Every address is validated against the USPS CASS database, correcting errors and adding missing ZIP+4 codes automatically.

    NCOA Processing

    National Change of Address processing updates movers' addresses before you mail, cutting undeliverables significantly.

    Automation Postage Discounts

    Properly addressed, barcoded mail qualifies for USPS automation rates — often 10–20% below non-automation rates.

    Full Personalization Support

    Variable addressing works hand-in-hand with variable data printing for fully personalized campaigns.

    High-Speed Production

    Inkjet addressing runs at tens of thousands of pieces per hour — no bottleneck in your production schedule.

    Any Mail Format

    We address postcards, #10 envelopes, 6×9 flats, catalog envelopes, self-mailers, and more.

    Who Uses Variable Addressing?

    Common applications and industries that rely on variable addressing as part of their direct mail workflow.

    Postcards & Flats

    Print recipient addresses and barcodes directly on the back panel for automation-rate eligibility.

    Window Envelopes

    Address the insert inside so it shows through the envelope window — no separate addressing step.

    Closed-Face Envelopes

    Inkjet-print name and address on the outer envelope for professional, personalized appearance.

    Self-Mailers & Booklets

    Apply address labels or direct inkjet addressing to folded self-mailers and booklet mailers.

    Non-Profit Bulk Mail

    Meet non-profit USPS presort requirements with properly formatted addresses and endorsement lines.

    Carrier Route Presort

    Sort and address by carrier route for maximum postage discounts on saturation mailings.

    Ready to Add Variable Addressing to Your Campaign?

    Catdi Printing handles every step of your mail production in-house. Get a custom quote today.

    Frequently Asked Questions

    Coding Accuracy Support System (CASS) is a USPS program that validates postal addresses to ensure they are deliverable and properly formatted. CASS-certified software corrects street abbreviations, adds ZIP+4 codes, and appends delivery point barcodes — required for automation postage rates.
    National Change of Address (NCOA) processing matches your mailing list against USPS forwarding records to update addresses for people who have moved. This reduces returned mail, lowers postage waste, and ensures your message actually reaches the intended recipient.
    No. We can accept raw addresses in almost any format and run them through our CASS/NCOA processing before addressing begins. We'll flag any unresolvable addresses for your review before mailing.
    Yes. We can print both the recipient address and your return address in a single pass using dual inkjet heads, saving a production step.
    Black is standard for addressing (required by USPS for barcode legibility). Blue is available for some formats. We'll confirm compatibility based on your mail piece design.