Letter — A4 · UK direct mail

What is an A4 direct mail letter, and how do you send one?

An A4 direct mail letter is a printed, personally addressed letter posted to a named person at a real UK address. You describe the campaign to Lenny, he writes and designs it to the printer's exact specification, you approve a proof, and it is printed, folded, enveloped and posted for you. One price per letter covers printing, the envelope and UK postage.

What actually arrives through the letterbox?

A folded A4 letter inside a windowed envelope, with the recipient's name and address showing through the window. It reads as a letter, not a flyer, which is why it gets opened.

Single or multi-page, simplex or duplex. Exact geometry is locked to the supplied Stannp A4 Letter Guide. Printed on 100gsm, 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 × 303 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 × 297 mm trimAddress box120 × 44.5 mm
Page one

Letter content with the envelope window address area kept clear.

216 × 303 mm artwork to supply3 mm bleed per edge204 × 291.1 mm safe zone2551 × 3579 px at 300 DPI
Download the original Stannp A4 Letter Guide

What can you choose on a letter — a4?

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

  • PrintingSingle-sided or Double-sidedYou choose
  • PostageUK economy or UK first classYou choose
  • Pages1 to 25 pagesYou choose
  • EnvelopeC5 windowed envelope, or C4 for an extra chargeYou choose
  • Confidential handlingCan be addedYou choose
  • Extra insertsCan be addedYou choose

Who is a letter — a4 right for?

Professional services

An accountancy practice writing to 400 local limited companies before the filing deadline.

Renewals and win-backs

A boiler servicing company writing to last year's customers with a dated service reminder.

Anything that needs explaining

A solicitor introducing a fixed-fee conveyancing service, where a postcard has nowhere near enough room.

Confidential or regulated messages

A financial adviser sending statements or policy changes in a confidential envelope.

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 letter — a4 mailing cost?

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

QuantityPer itemTotal
250£1.90£475.00
1,000£1.90£1,900.00
5,000£1.90£9,500.00
10,000£1.90£19,000.00

The price per item is the same at every quantity, and first class, confidential handling and larger envelopes are priced as upgrades. 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, enveloped 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

Letter — A4 questions, answered

How much does it cost to print and post an A4 letter?

One price per letter covers printing, the envelope and UK postage, and it falls as your volume rises. The worked examples on this page are read live from our current price list, so what you see is what you pay.

Can I send double-sided or multi-page letters?

Yes. Letters can be single or double-sided and run to multiple pages. The exact page range we accept is shown in the options table on this page, taken from the printer's own specification.

Can I send first class?

Yes, first class is an upgrade on letters, as is confidential handling and a larger envelope. Postcards go by standard post only.

Do I need my own mailing list?

No. You can upload your own list, or we can build an audience of UK households and businesses for you. Either way, every address is checked before anything is printed.

Will I see it before it goes out?

Always. A proof is produced first, and nothing is printed or posted until a person has approved it.

Do you write and design the letter?

Yes. Lenny writes the copy and produces the design at the printer's exact page size, bleed and safe area. You can also upload your own print-ready file and we will check it against the same specification.

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