Most people have received thousands of pieces of direct mail in their lives. Very few have any idea how it gets there. The process looks simple from the outside — someone sends you a postcard — but there’s a lot that happens between a client’s idea and a piece landing in someone’s hands.
Here’s what it actually looks like at GID.
Step 1: The List
Everything starts with data. Who are we mailing to? A client might come in with their own customer list, a purchased prospect list, or a geographic target area with specific demographic parameters. Whatever the source, the list has to be processed before anything else happens.
List processing means cleaning the data — removing duplicates, correcting addresses, running it through NCOA (National Change of Address) to catch people who’ve moved, and applying any suppression files the client needs. A bad list wastes postage and print. Good list hygiene is one of the most cost-effective things a mailer can do.
Step 2: The Mail Piece Design
While the list is being processed, the mail piece itself needs to be ready. This might be a postcard, a letter in an envelope, a self-mailer, or a more complex package with multiple inserts.
Design files need to meet postal specifications — size, weight, placement of the address block, clear zones for barcodes. Getting this wrong costs time and money. We review client files before they go to print and flag issues before they become problems.
Step 3: Print
Once the file is approved and the list is clean, printing begins. Depending on the piece, this might be offset printing for large runs or digital printing for shorter, more variable runs. At GID, we handle inkjet printing in-house for addressing and personalization — which means we can print variable data directly onto pieces as they move through production.
Step 4: Inserting
For envelope mailings, the inserting stage is where everything comes together. Letters, reply cards, brochures, and other components are collated and inserted into envelopes — either by hand for small or complex jobs, or by machine for volume. Our inserting equipment handles this at speed without sacrificing accuracy.
This step is where experience matters. A machine jam at the wrong moment, or an insert loaded out of sequence, can mean thousands of pieces have to be inspected or redone. Our floor team has seen every variation of this process and knows how to keep jobs moving.
Step 5: Inkjet Addressing
Every piece needs an address and a postal barcode. Inkjet addressing applies this information directly to the mail piece or envelope at high speed. The barcode is what allows USPS automation equipment to process the mail efficiently — and it’s what qualifies the mailing for presorted postage rates, which can meaningfully reduce postage cost on large jobs.
Step 6: Sorting and Drop-Shipping
Before the mail goes to the post office, it has to be sorted. Presorted mailings are organized by ZIP code and carrier route according to USPS requirements. The more granular the sort, the lower the postage rate.
Once sorted and bundled, the mail is drop-shipped to the appropriate postal facility. For large mailings, this might mean splitting the drop across multiple facilities to get pieces closer to their destinations faster.
Step 7: In the Mailbox
From our dock to a recipient’s mailbox, delivery typically takes two to five business days depending on class of mail and destination. For time-sensitive campaigns — a sale, an event, a deadline — that delivery window matters, and we plan production schedules around it.
The whole process, done well, is invisible to the end recipient. They just get a piece of mail. But behind that piece is a production chain that takes real expertise to execute cleanly, on time, and at scale. That’s what we do every day.
If you’re planning a mailing and want to understand how your specific project would flow through the process, we’re happy to walk you through it.