Postcard — A5 enveloped · UK direct mail

What is an A5 enveloped postcard, and why choose the envelope?

An A5 enveloped postcard is a large printed card sent inside an envelope rather than bare. The envelope buys you privacy and a moment of curiosity: the recipient has to open something. It suits offers that feel personal, and anything you would rather the whole household did not read on the doormat.

What actually arrives through the letterbox?

An envelope with the recipient's name showing, containing a full-colour A5 card printed both sides.

A5 card posted inside an envelope. Exact geometry is locked to the supplied Stannp A5 Enveloped Postcard Guide. Printed on 300gsm, addressed to a named person at a verified UK address, and posted through our print and post partner — never dropped door to door.

How does Lenny design it?

You describe the business and the offer. Lenny writes the copy, produces the artwork at the exact size the printer requires, and shows you both what it looks like and where every protected area sits.

01

Brief

Tell Lenny your business, your offer and who you want to reach. Bring your website or a menu if you have one.

02

Concept

Copy and layout produced at 216 × 154 mm, with the address area kept clear. Labelled a concept until a file is checked.

03

Verified print file

The file is measured against the printer's specification before it can be approved. Nothing is called print-ready until it passes.

04

Your approval

You approve, or ask for changes in plain words. Nothing is printed or posted without a person approving it.

Bringing your own artwork? Upload it and it is measured against the same specification. If it does not fit, you get a plain list of what to change — or we repair it and send it back for your approval.

What are the exact print measurements?

These come from our print partner's own published design guide, revision 2026-09-20. The same numbers drive Lenny's designs, our file checks and the order itself, so nothing can drift.

210 × 148 mm trimYour creative
Front

Full campaign creative. Backgrounds extend through bleed; important content stays inside the trim.

210 × 148 mm trimAddress box85.6 × 44.7 mm
Reverse

Supporting creative with the envelope-window address area kept clear.

216 × 154 mm artwork to supply3 mm bleed per edge210 × 148 mm safe zone2551 × 1819 px at 300 DPI
Download the original Stannp A5 Enveloped Postcard Guide

What can you choose on a postcard — a5 enveloped?

Exactly these, and nothing else. Anything marked fixed is set by the printer, not by us.

  • PrintingBoth sides printedFixed
  • PostageUK standard postFixed
  • PagesFront and back onlyFixed
  • EnvelopePosted inside an envelopeFixed
  • Confidential handlingNot offeredFixed
  • Extra insertsNot offeredFixed

Who is a postcard — a5 enveloped right for?

Personal or sensitive offers

A dental practice inviting lapsed patients back for a check-up.

Higher-value propositions

A kitchen showroom inviting 800 homeowners to a design consultation.

Loyalty and VIP mailings

A salon sending existing clients a birthday card with a coded reward.

Who do we send it to?

Two routes, both addressed mail.

We build the audience

Tell Lenny the area and the kind of household or business you want, and we build a targeted list of UK addresses for the mailing.

Address data integration not connected yet — audience counts are shown as unavailable rather than estimated.

You bring your own list

Upload a spreadsheet of customers. Every row is checked for a usable street address and postcode, duplicates are collapsed, and anything unpostable is skipped with a plain reason rather than printed.

How much does a postcard — a5 enveloped mailing cost?

One price per item covers printing, finishing and UK postage. These examples are read live from the same price list used at checkout.

QuantityPer itemTotal
250£2.20£550.00
1,000£2.20£2,200.00
5,000£2.20£11,000.00
10,000£2.20£22,000.00

The price per item is the same at every quantity, and postcards go by standard post; letter-only upgrades do not apply. Your confirmed price stays fixed.

What happens after you order?

01

Proof

A test copy is produced from your approved artwork. Nothing is posted and no postage is spent at this stage.

02

Human approval

A person at AutoLetters checks the order and the file against the specification before anything goes live.

03

Print and post

Items are printed, finished and handed to Royal Mail, with each item recorded against your order.

04

Responses recorded

QR codes, codes and redemptions are recorded against the campaign as an attributed ratio — never presented as profit or ROI.

Honest limits

Postcard — A5 enveloped questions, answered

Why send a postcard in an envelope?

Privacy and attention. The message is not on show, and an envelope addressed to a named person is opened more like post and less like advertising.

Does the address print on the card or the envelope?

The address sits in a protected area on the card and shows through the envelope window. That area is shown, to the millimetre, on this page.

How much more does the envelope cost?

It is built into the per-item price for this format. The worked examples on this page are read live from the price list, so you can compare it against a bare postcard directly.

Not sure which fits? Ask Lenny or compare every format on the pricing page.