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November 09, 2026
Why use postcards for direct mail?
A postcard has no envelope to open, so your message is seen the moment it arrives. Postcards suit promotions, event invitations, reminders, new-customer offers and seasonal campaigns. They are easy to read, cheap to produce in volume and easy to track with a code or link.
If you want a similar format for hand-outs rather than the mail, see our 4 x 6 flyers, which share the standard postcard size.
Popular postcard sizes
| Size | Notes |
|---|---|
| 4 x 6 in | Standard size, usually the lowest postage rate |
| 5 x 7 in | More design space, still easy to mail |
| 6 x 9 in and 6 x 11 in | Stand out in the mailbox, with different postage rules |
Check current postal size and weight rules before you finalise the size. A card that is slightly too large can cost much more to mail.
Paper stock and coating
Postcards must survive sorting machines and the mailbox. Cover stock of about 14 pt is the common choice. A gloss coating on the front makes images stand out, while an uncoated or matte back is easier to write or stamp on. Very thin stock can bend or jam, so avoid it.
Design for the mailbox
- Lead with the offer or headline on the front.
- Use one image and big, readable type.
- On the back, keep the address area free as the postal service requires, and put your call to action and contact details beside it.
- Add a trackable response, such as a short web address, a QR code or a unique offer code.
- Add a deadline to create a reason to act now.
Mailing lists and testing
A good list matters more than clever design. Target by location, customer type or past purchases where you can, and keep your list clean to avoid wasted postage. Send a small test batch first, compare responses, then scale up the version that works. Respect the privacy and marketing rules that apply where you mail.
Bulk postcard orders
Cost per card falls as quantity rises. If you plan repeat campaigns, consider a larger run with a date-free design that you can reuse. Pair postcards with other printed pieces, such as brochures for more detail or business cards for follow-up.
How to order postcards
For sizes, stocks and quantities, see our postcard printing page or use the custom quote form and tell us your size, quantity and whether you need design help. We will come back with options and pricing, and you approve a free digital proof before printing.
Frequently asked questions
What is the most common postcard size?
4 x 6 inches is the most common and usually has the lowest postage rate. 5 x 7 inches gives more design space.
What paper thickness is best for postcards?
About 14 pt cover stock is a common choice, as it is sturdy enough to survive mailing.
What should I put on the back of a postcard?
Your message, call to action and contact details, with the address area kept free as the postal service requires.
How do I track the results of a postcard campaign?
Use a short web address, QR code or a unique offer code, and compare responses between test batches.
Can I print postcards in bulk?
Yes. Cost per card falls as quantity grows, so larger runs are better value if you mail regularly.
Can I get a proof before my postcards are printed?
Yes. A free digital proof lets you check layout, colours and text before production.
