{"id":1645,"date":"2026-05-23T14:00:00","date_gmt":"2026-05-23T04:00:00","guid":{"rendered":"https:\/\/printshop.paperlust.co\/blog\/?p=1645"},"modified":"2026-06-17T11:29:40","modified_gmt":"2026-06-17T01:29:40","slug":"a6-vs-a5-vs-dl-postcards-australia","status":"publish","type":"post","link":"https:\/\/printshop.paperlust.co\/blog\/a6-vs-a5-vs-dl-postcards-australia","title":{"rendered":"A6 vs A5 vs DL Postcards: Which Size Is Right for Your Campaign?"},"content":{"rendered":"<p>Choosing the wrong postcard size is one of the most common, and most avoidable, mistakes in print marketing. Too small and your message gets lost. Too large and your postage costs balloon. Get it right and you have a format that fits your campaign budget, your mailbox, and your brand story all at once.<\/p>\n<p>This guide breaks down the three most popular postcard sizes used by Australian businesses: A6, A5, and DL. You will see how they compare on dimensions, postage costs, design requirements, and ideal use cases, so you can pick the right format before you brief your artwork.<\/p>\n<div data-canon=\"tldr\" style=\"background:#f8f6f3;border-left:4px solid #c9a96e;padding:24px 28px;margin:32px 0;border-radius:2px;\">\n<p style=\"font-size:13px;text-transform:uppercase;letter-spacing:1px;color:#c9a96e;margin:0 0 6px;\">At a glance<\/p>\n<p> <strong style=\"font-size:20px;display:block;margin-bottom:12px;line-height:1.3;\">A6 vs A5 vs DL postcards: quick reference<\/strong><\/p>\n<p style=\"margin:0 0 14px;\">The right size depends on budget, message length, and how you plan to distribute.<\/p>\n<ul style=\"margin:0;padding-left:20px;\">\n<li><strong>A6 (105x148mm)<\/strong> &#8211; most affordable per unit, letterbox-standard, best for high-volume drops and short offers<\/li>\n<li><strong>A5 (148x210mm)<\/strong> &#8211; twice the design canvas, premium presence, suits real estate, events, and detail-heavy campaigns<\/li>\n<li><strong>DL (99x210mm)<\/strong> &#8211; slim envelope-fit format, perfect for menus, price lists, rack displays, and addressed mail<\/li>\n<li>All three print on <strong>360gsm premium card<\/strong> with full-colour digital printing from <strong>$0.15 per card inc. GST<\/strong><\/li>\n<li>AU Post postage: A6 and DL both qualify as small letters at <strong>$1.70<\/strong>; A5 upgrades to large letter at <strong>$3.40<\/strong><\/li>\n<\/ul>\n<\/div>\n<h2>Postcard sizes at a glance<\/h2>\n<p>Before getting into the detail of each format, here is a side-by-side comparison covering the numbers that matter most for campaign planning.<\/p>\n<table style=\"width:100%;border-collapse:collapse;font-size:16px;margin:28px 0;\">\n<thead>\n<tr>\n<th style=\"background:#1a1a1a;color:#fff;padding:11px 16px;text-align:left;\">Format<\/th>\n<th style=\"background:#1a1a1a;color:#fff;padding:11px 16px;text-align:left;\">Dimensions<\/th>\n<th style=\"background:#1a1a1a;color:#fff;padding:11px 16px;text-align:left;\">Area vs A6<\/th>\n<th style=\"background:#1a1a1a;color:#fff;padding:11px 16px;text-align:left;\">AU Post category<\/th>\n<th style=\"background:#1a1a1a;color:#fff;padding:11px 16px;text-align:left;\">Postage (2026)<\/th>\n<th style=\"background:#1a1a1a;color:#fff;padding:11px 16px;text-align:left;\">Best use case<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background:#f9f9f9;\">\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\"><strong>A6<\/strong><\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">105 x 148mm<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">Baseline<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">Small letter<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">$1.70<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">High-volume drops, handouts, short promos<\/td>\n<\/tr>\n<tr style=\"background:#fff;\">\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\"><strong>A5<\/strong><\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">148 x 210mm<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">2x<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">Large letter<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">$3.40<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">Real estate, events, premium brand campaigns<\/td>\n<\/tr>\n<tr style=\"background:#f9f9f9;\">\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\"><strong>DL<\/strong><\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">99 x 210mm<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">1.3x<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">Small letter<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">$1.70<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">Enveloped mail, menus, rack cards, price lists<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"font-size:14px;color:#666;margin-top:-16px;\"><em>AU Post rates current as of 2026. Always confirm current rates at auspost.com.au before committing to a mailing budget.<\/em><\/p>\n<h2>A6 postcards (105x148mm): letterbox standard<\/h2>\n<figure style=\"margin:32px 0;\">\n<img decoding=\"async\" data-src=\"https:\/\/printshop.paperlust.co\/blog\/wp-content\/uploads\/2026\/06\/pc-ai-1645-inline_1.jpg\" alt=\"Single compact A6 marketing postcard with a bold colour-blocked design on a neutral surface, showing the small handy A6 format.\" style=\"width:100%;height:auto;display:block;border-radius:4px;\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" \/><br \/>\n<\/figure>\n<p>A6 is the workhorse of postcard printing in Australia. At 105mm wide and 148mm tall, it sits comfortably inside a standard residential letterbox, fits neatly into a C6 envelope, and stacks cleanly on a counter or in a display stand.<\/p>\n<h3>Why A6 works for high-volume campaigns<\/h3>\n<p>The smaller format means lower paper costs per unit and lower postage costs. On Australia Post&#8217;s current rate card, an A6 postcard mailed unaddressed or addressed as a regular small letter costs $1.70. Over a run of 5,000 cards, that is a meaningful saving versus the large-letter rate that A5 attracts.<\/p>\n<p>A6 is best suited to messages that can breathe in a compact space: a single strong offer, a QR code, a phone number, and a product image. Think seasonal specials from a cafe or beauty salon, event reminders, loyalty punch cards, or suburb-level letterbox campaigns for trade services.<\/p>\n<h3>A6 in numbers<\/h3>\n<ul>\n<li>Trim size: 105 x 148mm<\/li>\n<li>Print-ready file size (with 3mm bleed): 111 x 154mm<\/li>\n<li>Safe zone: keep text and logos at least 5mm inside the trim line<\/li>\n<li>Paper: 360gsm premium card, matte standard (silk, gloss, or uncoated on request)<\/li>\n<li>Printing: full-colour digital; offset pricing available for bulk on quote<\/li>\n<\/ul>\n<h3>Best for<\/h3>\n<ul>\n<li>High-volume letterbox drops (1,000 to 10,000+ runs)<\/li>\n<li>Point-of-sale handouts and counter cards<\/li>\n<li>Event reminders and short-deadline promotions<\/li>\n<li>Any campaign where cost-per-card is the primary constraint<\/li>\n<\/ul>\n<h2>A5 postcards (148x210mm): premium canvas<\/h2>\n<p>A5 is exactly double the area of A6, sharing the same proportions as a standard A4 sheet folded in half. The additional space shifts the whole feel of the piece, from compact promotional card to mini poster or premium direct-mail statement.<\/p>\n<h3>What the extra space buys you<\/h3>\n<p>With an A5 postcard you can run a large hero photograph on the front, add a detailed campaign message on the back, include a map or event schedule, and still have room for branding. Real estate agents use A5 to show property photography at a scale that holds attention. Event promoters use it to list a full programme. Retailers use it for seasonal lookbooks.<\/p>\n<p>The trade-off is postage. At 148 x 210mm, an A5 card exceeds AU Post&#8217;s small-letter maximum size of 130 x 240mm, so it sits in the large-letter category and attracts a $3.40 domestic stamp rate. For a 2,000-card addressed mailing, that gap versus A6 adds up to $3,400 in postage alone. Factor this into your total campaign cost before speccing the size.<\/p>\n<h3>A5 in numbers<\/h3>\n<ul>\n<li>Trim size: 148 x 210mm<\/li>\n<li>Print-ready file size (with 3mm bleed): 154 x 216mm<\/li>\n<li>Safe zone: keep text and logos at least 8mm inside the trim line<\/li>\n<li>Paper: 360gsm premium card, matte standard (silk, gloss, or uncoated on request)<\/li>\n<li>Printing: full-colour digital; offset pricing available for bulk on quote<\/li>\n<\/ul>\n<h3>Best for<\/h3>\n<ul>\n<li>Real estate property drop campaigns<\/li>\n<li>Event promotion with a full schedule or guest map<\/li>\n<li>Premium brand campaigns where size signals quality<\/li>\n<li>Catalogue-style product showcases with multiple images<\/li>\n<li>Restaurant and bar promotions where a full menu needs to fit on one face<\/li>\n<\/ul>\n<p>If you are planning a targeted restaurant or cafe campaign, the size and layout considerations overlap with what we cover in our guide to <a href=\"https:\/\/printshop.paperlust.co\/blog\/restaurant-postcard-marketing-australia\/\">restaurant postcard marketing<\/a>.<\/p>\n<h2>DL postcards (99x210mm): slim envelope-fit format<\/h2>\n<p>DL stands for &#8220;Dimension Lengthwise,&#8221; a format designed to slot directly into a DL envelope (110 x 220mm) without folding. At 99mm wide and 210mm tall, it is the same height as A5 but roughly a third narrower, which gives it a distinctive vertical orientation.<\/p>\n<h3>Why DL suits mailing campaigns<\/h3>\n<p>If your distribution plan involves enveloped addressed mail, think financial services, real estate buyer updates, or appointment reminders, DL is the natural choice. The postcard fits inside a DL envelope with about 5-6mm of clearance on each side, which is enough for a clean insert without buckling.<\/p>\n<p>DL also works well as a counter rack card. Most standard brochure holders and information stands are built around DL dimensions, so a DL postcard can double as a leave-behind display without any additional framing. Menus, price lists, service guides, and step-by-step instructions all suit DL&#8217;s tall, vertical reading flow.<\/p>\n<p>On postage, DL is a small letter. Even though it is taller than A6, its width (99mm) keeps it inside AU Post&#8217;s small-letter footprint, so it mails at $1.70, the same rate as A6.<\/p>\n<h3>DL in numbers<\/h3>\n<ul>\n<li>Trim size: 99 x 210mm<\/li>\n<li>Print-ready file size (with 3mm bleed): 105 x 216mm<\/li>\n<li>Safe zone: keep text and logos at least 5mm inside the trim line<\/li>\n<li>Paper: 360gsm premium card, matte standard (silk, gloss, or uncoated on request)<\/li>\n<li>Printing: full-colour digital; offset pricing available for bulk on quote<\/li>\n<\/ul>\n<h3>Best for<\/h3>\n<ul>\n<li>Addressed mail inserted into DL envelopes<\/li>\n<li>Counter rack card displays (most brochure stands are DL)<\/li>\n<li>Menus, price lists, and service guides where vertical reading flow helps<\/li>\n<li>Appointment cards and follow-up mailers<\/li>\n<li>Any campaign that runs alongside DL-format letterheads or compliment slips<\/li>\n<\/ul>\n<h2>Design implications by size<\/h2>\n<figure style=\"margin:32px 0;\">\n<img decoding=\"async\" data-src=\"https:\/\/printshop.paperlust.co\/blog\/wp-content\/uploads\/2026\/06\/pc-ai-1645-inline_2.jpg\" alt=\"Several rectangular postcards in varying sizes fanned and overlapping on a neutral surface, illustrating the choice between postcard size formats.\" style=\"width:100%;height:auto;display:block;border-radius:4px;\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" \/><br \/>\n<\/figure>\n<p>Picking a size is not just about budget and postage. Each format has its own design constraints that affect how your artwork needs to be set up before it goes to print.<\/p>\n<h3>Bleed, margins, and safe zones<\/h3>\n<p>All three formats use a standard 3mm bleed. This means your background colour, full-bleed photograph, or pattern needs to extend 3mm beyond the trim edge on all sides. If it does not, you risk a thin white strip appearing at the edge after trimming.<\/p>\n<p>The safe zone is the area inside the trim line where critical content must sit. For A6 and DL, the safe zone starts 5mm inside the trim. For A5, allow 8mm. Keep your headline, contact details, logo, and QR code well inside these boundaries.<\/p>\n<h3>Text scaling and readability<\/h3>\n<p>A6&#8217;s compact width (105mm) means body text smaller than 8pt becomes difficult to read in print. Stick to 9pt or larger for body copy and at least 16pt for your main call to action. A5 gives you more room to breathe with body copy, and the larger print area supports richer visual hierarchy with subheadings and bullet lists. DL&#8217;s narrow width calls for a single-column layout. Trying to run two columns on a 99mm-wide card almost always produces cramped output.<\/p>\n<h3>Photo cropping<\/h3>\n<p>A landscape hero photo crops very differently across these three formats. A6 at 105x148mm lends itself to a portrait crop of about 2:3. A5 at 148x210mm is closer to an A4 portrait crop and accommodates wider landscape images on the long axis if printed in landscape orientation. DL&#8217;s tall vertical format is best served by portrait photography with a strong vertical composition: a single product or person centred in frame works well.<\/p>\n<h3>Colour and file specs (all three sizes)<\/h3>\n<p>Regardless of size, all postcards should be set up in:<\/p>\n<ul>\n<li>CMYK colour mode (not RGB &#8211; screens display colours differently to print)<\/li>\n<li>Resolution of 300dpi at final print size<\/li>\n<li>Fonts outlined or embedded (to avoid font substitution on press)<\/li>\n<li>PDF\/X-1a or PDF\/X-4 export for cleanest results<\/li>\n<\/ul>\n<p>For a deeper guide on setting up print-ready artwork, see our <a href=\"https:\/\/printshop.paperlust.co\/blog\/how-to-design-a-postcard-for-printing\/\">postcard design and file specs guide<\/a>, which covers bleed setup, CMYK conversion, and file checklist in detail.<\/p>\n<h2>Postage and mailing costs: what each size actually costs to send<\/h2>\n<p>Postage is often the hidden variable that blows a campaign budget. Here is how each format maps to AU Post&#8217;s domestic rate card.<\/p>\n<h3>Current AU Post domestic rates (2026)<\/h3>\n<table style=\"width:100%;border-collapse:collapse;font-size:16px;margin:28px 0;\">\n<thead>\n<tr>\n<th style=\"background:#1a1a1a;color:#fff;padding:11px 16px;text-align:left;\">Format<\/th>\n<th style=\"background:#1a1a1a;color:#fff;padding:11px 16px;text-align:left;\">AU Post category<\/th>\n<th style=\"background:#1a1a1a;color:#fff;padding:11px 16px;text-align:left;\">Postage per item<\/th>\n<th style=\"background:#1a1a1a;color:#fff;padding:11px 16px;text-align:left;\">Cost per 1,000 sent<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background:#f9f9f9;\">\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\"><strong>A6<\/strong><\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">Small letter<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">$1.70<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">$1,700<\/td>\n<\/tr>\n<tr style=\"background:#fff;\">\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\"><strong>DL<\/strong><\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">Small letter<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">$1.70<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">$1,700<\/td>\n<\/tr>\n<tr style=\"background:#f9f9f9;\">\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\"><strong>A5<\/strong><\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">Large letter<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">$3.40<\/td>\n<td style=\"padding:11px 16px;border-bottom:1px solid #eee;\">$3,400<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"font-size:14px;color:#666;margin-top:-16px;\"><em>Postage is per domestic addressed item. Unaddressed mail (letterbox drops) uses different bulk mail pricing through AU Post Business. Confirm current business rates directly with AU Post for large-volume unaddressed campaigns.<\/em><\/p>\n<p>The postage difference between A5 and the other two formats runs to $1.70 per piece. On a 5,000-card mailing, that is $8,500 extra in postage. Many businesses that want A5&#8217;s visual impact choose to use it for follow-up campaigns to a warm list while running A6 for cold letterbox drops.<\/p>\n<p>For direct mail strategy advice specific to small businesses, our guide on <a href=\"https:\/\/printshop.paperlust.co\/blog\/direct-mail-postcards-small-business-australia\/\">direct mail postcards for small business<\/a> covers list sourcing, timing, response tracking, and how to calculate a realistic ROI before you commit to a print run.<\/p>\n<h2>Frequently asked questions<\/h2>\n<p><strong>What is the standard postcard size in Australia?<\/strong><\/p>\n<p>A6 (105x148mm) is the most widely used standard postcard size for letterbox drops and direct mail in Australia. It fits inside a C6 envelope, qualifies as a small letter for AU Post, and is the most cost-effective option for high-volume campaigns. A5 and DL are also popular in specific contexts.<\/p>\n<p><strong>What is DL postcard size in mm?<\/strong><\/p>\n<p>DL postcards are 99mm wide by 210mm tall. The format is designed to fit directly into a standard DL envelope (110x220mm) without folding. Despite being taller than A6, its 99mm width keeps it within AU Post&#8217;s small-letter dimensions, so it mails at the same $1.70 rate.<\/p>\n<p><strong>Does A5 cost more to post than A6?<\/strong><\/p>\n<p>Yes. An A5 postcard (148x210mm) exceeds AU Post&#8217;s small-letter maximum dimensions and is classified as a large letter, attracting a $3.40 domestic stamp rate. An A6 or DL postcard mails at $1.70 as a small letter. For large addressed mailings, that $1.70 difference per piece adds up significantly.<\/p>\n<p><strong>What bleed do I need for A6, A5, and DL postcards?<\/strong><\/p>\n<p>All three formats use a 3mm bleed on all sides. Add 6mm to both dimensions when setting up your print file (e.g., A6 becomes 111x154mm). Safe zone is 5mm inside the trim for A6 and DL, and 8mm for A5. Set artwork to CMYK at 300dpi and export as a print-ready PDF.<\/p>\n<p><strong>Can I print different sizes in the same order?<\/strong><\/p>\n<p>Yes. Each size is priced independently based on quantity and format. If you need A6 for a letterbox drop and DL for counter display in the same campaign, you can order them separately. Speak to the Paperlust Print Shop team if you have a combined campaign and would like to discuss volume pricing across formats.<\/p>\n<p><strong>What is the minimum order for postcards?<\/strong><\/p>\n<p>Paperlust Print Shop offers competitive per-unit pricing from $0.15 inc. GST with volume-tiered pricing. There is no blanket minimum order quantity listed, contact the team for a quote on your specific run size and format.<\/p>\n<div style=\"background:#f8f6f3;border:1px solid #c9a96e;border-radius:4px;padding:28px 32px;margin:40px 0;text-align:center;\">\n<p style=\"font-size:18px;font-weight:600;margin:0 0 8px;\">Ready to print?<\/p>\n<p style=\"margin:0 0 20px;color:#444;\">360gsm premium card, full-colour digital, from $0.15 per card inc. GST. Melbourne production with AU-wide delivery.<\/p>\n<p> <a href=\"https:\/\/printshop.paperlust.co\/products\/postcard\" style=\"background:#c9a96e;color:#fff;padding:14px 28px;border-radius:3px;text-decoration:none;font-weight:600;display:inline-block;\">Order postcards<\/a>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Compare A6, A5 and DL postcard sizes for your AU print campaign. Dimensions, AusPost letter rates, design canvas, and use-case picks. Printed on 360gsm premium card.<\/p>\n","protected":false},"author":5,"featured_media":3137,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-1645","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-postcards"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>A6 vs A5 vs DL Postcards: Which Size Is Right for Your Campaign? - Printshop by Paperlust<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/printshop.paperlust.co\/blog\/a6-vs-a5-vs-dl-postcards-australia\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A6 vs A5 vs DL Postcards: Which Size Is Right for Your Campaign? - Printshop by Paperlust\" \/>\n<meta property=\"og:description\" content=\"Compare A6, A5 and DL postcard sizes for your AU print campaign. 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