

Custom Postcards for Mailings, Inserts and Art
Custom postcards are a small, sturdy piece of print that does a surprising amount of work: they land on doormats as direct mail, slip into parcels as thank you notes and sell as art prints in their own right. We print them on heavy card in standard and custom sizes, single or double sided.
- Design proofFree, approved by you before printing
- PriceCustom quote by email within one working day
- Production4–7 working days after proof approval
- DeliveryFree and tracked, UK mainland, 2–3 working days
- Misprints or damageReported within 10 days, reprinted or refunded
One Card, Many Jobs
Few printed items are as versatile as the humble postcard. A restaurant posts them to local streets to announce a new menu. An online shop drops one into every order with a discount code for the next purchase. An illustrator sells a set of six at a craft fair. A charity sends them to supporters with a short handwritten note. In each case, the card is small enough to be cheap to print and post, yet stiff and colourful enough to be noticed and kept.
That versatility means the brief matters. A card for direct mail has to be read in three seconds on a doormat. A parcel insert can be more personal and playful. An art postcard is all about colour accuracy and paper feel. Knowing which job your card is doing shapes the size, stock and finish you choose. Single cards with a blank inside face are listed as flat greeting cards for shops and print on the same stocks.
Postcards in the Parcel
For online sellers, the parcel insert is the most valuable postcard of all. It arrives at the moment the customer is happiest with your brand, opening something they chose. A well designed card can thank them, show other products, explain how to care for the item, invite a social post or offer a code for their next order. It costs very little and it is often kept on a fridge or a pinboard.
Keep the message focused. One clear call to action, such as a discount code or a social handle, works better than a crowded card that tries to say everything. The reverse can carry a short note in your own voice.
Timing the code helps too. A discount that runs for a limited period after delivery encourages a quick second order, while a referral code for a friend turns one happy customer into two. If you send different products to different customers, a couple of insert designs matched to product types can feel more personal than a single generic card, and they cost little more to print in the same run. Where the insert needs a shape rather than a rectangle, die-cut flyers in a custom outline do the same job.

Often ordered by
- Online shops
- Artists and illustrators
- Restaurants and cafes
- Salons and local services
- Estate agents
- Charities
- Event organisers
Popular Postcards Sizes
Sizes are in mm. Every order is cut to your size, so any size between these rows is fine.
| Size | Often used for |
|---|---|
| A6 A6 105 x 148 mm | Parcel inserts and classic postcards |
| 5 x 7 inch 127 x 178 mm | Art prints and invitations |
| A5 A5 148 x 210 mm | Menus and promotional mailers |
| DL DL 99 x 210 mm | Offers and appointment reminders |
| Square 148 x 148 mm | Art and photography cards |
Not sure of the size? Send the product measurements and we work out the rest.
Styles
- Single sided
- Double sided
- Rounded corners
- Square postcards
- Custom sizes
Materials
- Silk coated card
- Gloss coated card
- Uncoated card
- Kraft card
- Full colour both sides
- One side colour, one side black
- Spot colours
- Multiple designs per order
Finishes
- Matt lamination
- Gloss lamination
- Soft touch lamination
- Spot UV
- Foil
Extras
- Envelopes
- Rounded corners
- Address panel layout
- Numbered sets

Not sure which material or finish suits? Tell us how the postcard will be used and we suggest one in your custom quote.
Production and Delivery
Production takes 4–7 working days after you approve the free design proof. Delivery to the UK mainland is free and tracked, and arrives in 2–3 working days once the order leaves production. The tracking link comes to you by email.
Reprints and Refunds
Check the order when it arrives. If anything is misprinted or damaged, report it within 10 days with a photo and we reprint or refund the items affected. Read the full returns and reprints policy.
Need it by a date?
Tell us the date with your sizes and we plan the proof and production around it.
Postcards Specification
| Style | Single sided, Double sided, Rounded corners, Square postcards, Custom sizes |
|---|---|
| Material | Silk coated card, Gloss coated card, Uncoated card, Kraft card |
| Full colour both sides, One side colour, one side black, Spot colours, Multiple designs per order | |
| Finish | Matt lamination, Gloss lamination, Soft touch lamination, Spot UV, Foil |
| Extras | Envelopes, Rounded corners, Address panel layout, Numbered sets |
| Size | Made to your size in mm |
| Minimum order | Low, quoted per job |
| Price | From £0.25 a postcard; custom quote by email within one working day |
| Proof | Free design proof before printing |
| Production | 4–7 working days after proof approval |
| Delivery | Free tracked UK mainland delivery, 2–3 working days |
Direct Mail That Gets Read
Postcards are effective direct mail because there is nothing to open. The message is visible the moment the card is picked up. For local businesses such as cafes, salons, estate agents and trades, a postcard drop to nearby streets is a simple way to reach new customers. Use a bold image or headline on one side and the offer, address and contact details on the other, with space for the postage and address if you are posting them individually.
If you are mailing through a postal service, check their size and weight limits for postcards and letter-size items so you pay the lowest rate. We can make cards to those dimensions on request. Local services that want a card which cannot be mistaken for junk mail often switch to door hanger flyers that hang on handles.
- Grand openings and new menu launches
- Special offers and appointment reminders
- Event invitations and save the dates
- Estate agent area mailings
- Charity supporter updates
Sizes and Card Weights
A6 is the classic postcard size and fits comfortably into most envelopes, parcels and pockets. The slightly larger 5 x 7 inch format, around 127 x 178 mm, gives more room for artwork and suits art prints and invitations. A5 is good for menus and promotional mailers. DL suits a longer, narrower design and fits standard DL envelopes. Square cards look different on a doormat and work nicely for art and photography.
Card weight affects how a postcard feels and how it survives the post. Heavier card feels premium, resists bending and stands up on a shelf. Lighter card keeps postage and printing costs down for large mailings. We will suggest a weight based on how the card will be used.
Custom sizes are possible too, for example a long panoramic card for landscape photography. The weights are shown with photographs of the edge in our guide to card and board types.
Finishes and Paper Feel
The stock and finish change the personality of a postcard. Silk and gloss coated cards make photographs and bright colours pop. Uncoated card has a natural, slightly textured feel that suits handwritten notes, because pens write easily on it. Matt lamination gives a smooth, soft surface and protects colours from scuffing, while soft touch lamination feels velvety and premium.
Spot UV, foil and rounded corners add extra detail when the card is part of a premium unboxing. If the card will be written on, keep the writing side uncoated or choose a finish that takes ink, and avoid lamination on that side.
Kraft card gives a rustic look that pairs well with simple one-colour artwork.
Design Tips That Make a Difference
Allow a bleed of a few millimetres on every edge so colour runs right to the trim, and keep text and logos well inside the edge so nothing is cut off. Use high resolution images, especially for art cards, as low resolution files look soft when printed. For text, a simple, readable font at a sensible size is far better than a stylish one that is hard to read.
If you are printing several designs, for example a set of art cards or a range of offers for different services, they can be printed in the same order. Your free design proof shows each one so you can check colours, layout and text before printing.
Think about the back as carefully as the front. On a direct mail card, the reverse is where people decide whether to act, so put the offer, the deadline and one clear way to respond there. On an art card, a small caption with the title of the work, your name and your website turns a pretty card into a lead back to your shop. On a parcel insert, a few lines in a warm, personal tone often do more than a polished slogan. The free proof laid out at trim size shows the bleed and safe area so nothing important is cut off.
Match the Card Weight to the Job Before Choosing a Size
Postcards are cheap to print and easy to get slightly wrong, so settle the job first. A parcel insert can be 300 gsm silk and A6, because it travels protected and is read once. A direct mail card goes through sorting machinery and letterboxes, so it wants 350 gsm or heavier and a size inside the postal letter limits. An art card sold in a shop wants uncoated 350 gsm and often a square or 5 x 7 format. Decide that, then prepare each design at trim size plus 3 mm bleed with an address panel on the back if it is going through the post. Cards that fold are set up as folded greeting cards with an inside page instead.
Email the size, card, finish, number of designs and quantity per design, and a custom quote comes back within one working day with a free design proof after it. Cards are printed in 4 to 7 working days once approved and delivered free and tracked on the UK mainland in 2 to 3 days. A batch with a print fault reported within 10 days is reprinted or refunded.
Design Your Postcard
Choose the postcards photo closest to what you have in mind, add your logo, drag it into place and set the size. Send it with your sizes and we reply with a custom quote and a free design proof.

Drag the logo, or select it and use the arrow keys (Shift moves faster, + and − resize).
Related Products
Other packaging that is often ordered alongside postcards.

Flat Greeting Cards
Custom flat greeting cards are single-panel cards on heavy board, printed on the front with your design and on the back with a…

Die-Cut Flyers
Custom die-cut flyers are printed leaflets cut into a shape rather than a plain rectangle, so they get noticed in a pile of…

Folded Greeting Cards
Custom folded greeting cards are printed flat on heavy board, creased on a machine and folded so the spine sits straight and…

Door Hanger Flyers
Custom door hanger flyers combine a flyer's room for detail with a hanger that stays on the door handle until someone deals…
Postcards Questions
What buyers ask before ordering postcards.
What is the best postcard size for parcel inserts?
A6 fits most parcels and envelopes without bending. It is large enough for a message and a discount code, and small enough to be cheap to print.
Can I write on a laminated postcard?
Most pens smudge on lamination. If you plan to write notes, keep the writing side uncoated or unlaminated.
Which card weight feels premium?
Heavier card feels sturdier and more premium. For art prints and inserts, a heavier weight is worth it; for large mailings, a lighter weight saves cost.
Can I print a set of different art postcards?
Yes. Several designs can be printed in one order, each shown on its own proof. Quantities per design are reflected in your custom quote.
Do you supply envelopes for postcards?
Envelopes can be supplied to match common postcard sizes. Ask when you request a quote.
What bleed should my artwork have?
Allow a few millimetres of bleed on each edge and keep important text well inside the trim. We check this on your proof.
Can postcards have rounded corners?
Yes. Rounded corners give a softer look and resist dog-earing in parcels and pockets.
Which finish makes photographs look best?
Gloss or silk coated card with gloss lamination makes photographs vivid. Matt lamination gives a softer, more modern look.
Can a postcard include an address panel for posting?
Yes. We can lay out the reverse with an address area and space for postage. Check your postal service guidelines for size limits.
How quickly can postcards be delivered for an event?
Production takes 4–7 working days after proof approval and free tracked UK mainland delivery takes 2–3 working days.
What if colours on my art cards look wrong?
If cards do not match the approved proof, report it within 10 days and we will reprint or refund them.
Get a Price for Your Postcards
Fill in as much as you know. Sizes are in mm (internal sizes for boxes). If you have artwork, attach it; if not, a logo is enough to start the proof.
We reply with a custom quote by email within one working day, then send a free design proof before anything is printed.
- Phone+44 7578 382054
- WhatsAppMessage us
- Emailinfo@shopcustomboxes.co.uk
- HoursMonday to Friday, 9 am to 5.30 pm UK time
- OfficeOffice 704, 85 Dunstall Hill, Wolverhampton, WV6 0SR