Types of Direct Mail Advertising
Direct mail advertising comes in a handful of proven formats: postcards, letters, self-mailers, brochures, flyers, and EDDM. This guide breaks down what each one does best, what it costs, and how to print and mail it at 4OVER4.COM.
The main types of direct mail advertising are postcards, letters and envelope mailers, folded self-mailers, brochures and catalogs, flyers and leaflets, and Every Door Direct Mail (EDDM). Postcards are the low-cost workhorse for offers and reminders, letters add a sealed envelope for trust-driven campaigns, self-mailers and brochures carry more detail, and EDDM blankets whole carrier routes without a mailing list. Match the format to your goal, audience, and budget, then print and mail it in one place at 4OVER4.COM.

Quick tips
Quick tips for choosing a direct mail format
Match the format to your goal. Reach a wide local area at the lowest cost with postcards, flyers, or EDDM. Build trust with a sealed letter for fundraising or renewals. Say more with a folded self-mailer or a brochure. Test two formats on a slice of your list before you scale, and let the price table and specs on each 4OVER4.COM product confirm size, stock, finish, and turnaround before you order.
What direct mail advertising actually is
Direct mail advertising is any printed piece you send through the postal service to reach a specific person or household with a marketing message. It is the physical counterpart to email and paid ads, and it earns attention precisely because it is not crowded into an inbox. A well made piece lands in the hand, gets read, and often gets kept on the fridge or the desk.
The category is broad. It runs from a single-panel postcard to a multi-page catalog, and each format trades cost against how much you can say. Before you pick one, it helps to see the full menu. That is what this guide covers, with a clear route to direct mail printing at 4OVER4.COM when you are ready to order.
If you want the numbers behind the channel first, our direct mail response rate benchmarks and direct mail versus email comparison lay out how the format performs against digital.
Postcards: the direct mail workhorse
Postcards are the most used direct mail format for good reason. There is no envelope to open, so your message is read the instant the piece is pulled from the mailbox. The cost per piece is low, the setup is simple, and a strong headline plus one clear offer does most of the work.
They fit reminders, sales, grand openings, and appointment nudges. Sizes range from a standard card up to oversized postcards that dominate the stack, and specialty stocks like matte, gloss, or kraft change the feel in the hand. For a campaign built around mailing, direct mail postcards ship and mail in one workflow.
Browse the full range on the postcard printing page, and if you are designing from scratch, the guide on how to make postcards covers sizes, bleed, and layout.
Letters and envelope mailers
A letter in a sealed envelope carries a different signal than an open card. The envelope suggests something personal and important, which is why letters remain the format of choice for fundraising, account statements, renewals, and high-value offers that depend on trust.
Because the reader has to open the envelope, the outer piece has to earn that action with a clean look or a teaser line. Inside, you get a full page to build the case, personalize the greeting, and close with a specific ask. Our direct mail letters service prints and mails the package together, so the envelope, letter, and any insert stay in sync.
Letters pair naturally with a list. If you do not have one yet, read how to build or rent a mailing list for direct mail before you print.
Self-mailers and folded formats
Sometimes a flat card is too small and a letter is more than you need. Self-mailers fill that gap. A folded postcard gives you extra panels for a coupon, a map, a short story, or a step-by-step offer, and it travels without a separate envelope, which keeps postage and handling down.
Self-mailers work well for menus, event invites, service reminders with a detachable coupon, and multi-step promotions. The extra real estate lets you lead with a hook on the outside and reveal the detail once the reader opens the fold. If your piece needs a formal fold pattern, the how to fold a brochure guide explains the common folds and how to set up the file.
Brochures and catalogs
When the product genuinely needs room to breathe, a brochure or catalog is the format that delivers. Multiple panels or pages carry full photography, specs, pricing tiers, and a narrative in a single mailed piece. This is the format for real estate portfolios, product lines, travel packages, and considered purchases where one small card cannot do the selling.
The trade-off is cost and weight, both of which affect postage. That is the price of depth, and for the right offer it pays back. Our direct mail brochures print and mail as one job, and you can compare panel counts and folds on the brochure printing page or in the how to make brochures guide.
Flyers, leaflets, and door hangers
Flyers and leaflets are the lightweight, high-volume end of the spectrum. A single sheet, printed one or two sides, is inexpensive to produce in quantity and quick to read. Flyers suit event promotion, grand openings, and broad local awareness where you want to put a message in as many hands as possible.
They pair well with saturation mailing and with hand distribution. For neighborhoods, door hangers deliver the same idea to the doorknob instead of the mailbox. See the full range on the flyer printing page, or order a mailed run with direct mail flyers. The guide on how to mail flyers to a neighborhood covers the logistics.
EDDM: reach every door on a route
Every Door Direct Mail, or EDDM, is a United States Postal Service program that lets you mail to every address along a chosen carrier route with no mailing list and no individual addressing. You pick the routes on a map, print a piece that meets the size rules, and the carrier delivers to each door on the walk.
EDDM shines for local saturation. Restaurants, home services, dental and medical offices, and neighborhood retail use it to blanket a defined area at a low cost per household. Oversized postcards are a common EDDM format because they hold a strong offer and meet the dimensions. Before you design, read the EDDM guidelines and file setup and check the approved EDDM postcard sizes so your piece qualifies.
How to choose the right format and what it costs
The fastest way to choose is to plot your options against two questions: how wide do you need to reach, and how much do you need to say. Postcards and EDDM win on reach and cost, while brochures and self-mailers win on depth. Letters sit in the middle when trust and personalization carry the offer.
Pricing on any 4OVER4.COM product is set by quantity, size, paper stock, finish, and turnaround, and the live price table shows the exact per-unit and total before you order. Larger runs lower the unit cost, specialty stocks and coatings raise it, and rush turnaround adds a premium. Postage is separate and depends on format, weight, and mailing class.
Still deciding between two formats? Order a small test of each, mail to a slice of your list, and let the response pick the winner. For inspiration on what stands out, see effective direct mail formats and this nonprofit direct mail case study. When you are ready, direct mail printing at 4OVER4.COM handles print and mailing in one place.
Specs and pricing
Folded postcard specs and pricing
A folded self-mailer is one of the most versatile direct mail formats. Here is what a made-to-order folded postcard gives you at 4OVER4.COM, with live specs and price-per-unit straight from the configurator.

| Quantity | Price Per Unit | Total |
|---|---|---|
| 50 | $1.69 | $84.36 |
| 100 | $1.13 | $113.35 |
| 200 | 68.5¢ | $137.08 |
| 300 | 56.7¢ | $170.03 |
| 400 | 48.4¢ | $193.75 |
| 500 | 43.5¢ | $217.47 |
| 600 | 41.5¢ | $249.11 |
| 700 | 43.9¢ | $307.10 |
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Order direct mail formats at 4OVER4
Wally explains direct mail formats
The right format is the one that matches your goal

Wally sorts direct mail like a mailroom pro: postcards for a fast, low-cost offer, letters when trust does the selling, self-mailers and brochures when you have more to say, and EDDM when you want every door on the route. Pick the format for the job, not the fanciest one. A folded postcard is the flexible middle ground, so it is a smart place to start at 4OVER4.
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Common Questions
Common questions about types of direct mail advertising
What is direct mail advertising?
Direct mail advertising is any printed piece sent through the postal service to reach a person or a household with a marketing message. It covers postcards, letters, self-mailers, brochures, catalogs, flyers, and Every Door Direct Mail. The common thread is that your offer lands physically in a mailbox rather than in a crowded inbox, which is why response and recall tend to hold up well against digital channels.
How do I choose the right direct mail format?
Start with your goal, your audience, and your budget. Postcards win for simple offers and the lowest cost per piece. Letters suit trust-driven campaigns like fundraising or renewals. Folded self-mailers and brochures make sense when you need to explain more. EDDM is best when you want to blanket a local area without a mailing list. If you are torn between two formats, order a small test run of each and compare the response before you scale.
What does direct mail advertising cost and how is pricing set?
Print pricing at 4OVER4.COM is driven by quantity, size, paper stock, coating or finish, and turnaround. Larger quantities lower the price per piece, heavier stocks and specialty finishes raise it, and rush turnaround adds a premium. Postage is separate and depends on the format, weight, and mailing class. The live price table on each product page shows the exact per-unit and total cost for your chosen quantity before you order.
What sizes, stocks, and finishes are available?
Direct mail comes in standard postcard sizes, oversized formats, folded panels, letter sheets, and multi-panel brochures. Stocks range from lightweight text weight to thick cardstock and kraft, with matte, gloss, soft touch, and specialty coatings. The specs panel on each 4OVER4.COM product lists the exact sizes, paper weights, and finishes available for that format so you can match the piece to the campaign.
How long does direct mail take to print and ship?
Turnaround depends on the product, the finish, and the quantity, and the default production time is shown on every product page next to the price. Add transit time to reach you, plus mailing time once the pieces are in the postal stream. If you use a direct mail service, printing and mailing happen in one workflow, which removes the step of shipping the run to yourself first.
What is EDDM and when should I use it?
EDDM stands for Every Door Direct Mail, a United States Postal Service program that lets you mail to every address on a chosen carrier route without buying a mailing list or addressing each piece. It is a strong fit for local businesses like restaurants, home services, and retail that want saturation coverage in a defined area. Our guide on EDDM guidelines and file setup walks through the size and layout rules before you print.
Do I need a mailing list, and can 4OVER4 mail for me?
Addressed formats like postcards, letters, and brochures need a mailing list, which you can build from your own customers or rent by demographics and geography. EDDM does not need a list at all. 4OVER4.COM offers direct mail services that print and mail your campaign in one place, so you can hand off the postage and delivery instead of managing it yourself.
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