> For the complete documentation index, see [llms.txt](https://userguide.zappost.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://userguide.zappost.com/zap-post-web-app/zap-post-user-guide/zap-app/using-the-zapp/design/useful-design-resources.md).

# Useful Design Resources

## Paper Stock Details

### UK

These paper stocks are available for any direct mail campaigns targeting the UK and Ireland.<br>

**A5 Postcard: 210 x 148mm**

* 350 gsm
* Coated
* FSC Paper

<figure><img src="/files/aEgpA0mjiZIMatvHtwK7" alt="" width="279"><figcaption></figcaption></figure>

{% file src="/files/ikWJpnRGInPeGv4IMWGV" %}

{% file src="/files/CFsxhXIMKP0T86VIsImO" %}

**SECURE Letter: 210 x 297mm**

* 100 gsm
* Uncoated
* FSC Paper

<figure><img src="/files/13j37zteKyTgoFpiycax" alt="" width="179"><figcaption></figcaption></figure>

{% file src="/files/XHqjwL4ERopYfndWTLY3" %}

{% file src="/files/j7Ileay423AmHPDWhd4b" %}

\
**'Handwritten' Postcard in Envelope: 210mm x 148mm -**&#x20;

* 300 gsm
* Uncoated
* FSC Paper
* Mailed in a plain, white envelope with handwritten-style address and green stamp, no postage indicia

<figure><img src="/files/90eyD81yR4zfkcqklD8c" alt="" width="180"><figcaption></figcaption></figure>

{% file src="/files/KAfhns4lLMfj9m1jx3BL" %}

{% file src="/files/8KDDzKFzosI2iJZlkSFs" %}

\
**A5 One Piece Mailer: 210mm x 336mm**

* 250gsm
* Coated
* FSC Paper

<figure><img src="/files/fxUpDeSbqzBjGgVpkUIB" alt="" width="300"><figcaption></figcaption></figure>

{% file src="/files/ApnecJ72N34LZqdb6xcS" %}

{% file src="/files/OUipPF3BFo1xMxxgADFi" %}

\
**Impact Postcard: 240 x 155mm**

* 350 gsm
* Coated
* FSC Paper

<figure><img src="/files/VCtmhmA2BfoyArMWoRlM" alt="" width="279"><figcaption></figcaption></figure>

{% file src="/files/8F4SjY9Xnbz7PuC4ESpl" %}

{% file src="/files/XHthTCduLdccpBQbXmjA" %}

\
**Postcard in Envelope: 210mm x 148mm**

* 350 gsm
* Coated
* FSC Paper
* Mailed in a plain, white envelope with address printed on.

<figure><img src="/files/GSasA6xwS6hdpmYrlBRq" alt="" width="180"><figcaption></figcaption></figure>

{% file src="/files/tFSbJg1BKNHZI7iNF3pF" %}

{% file src="/files/WZTOYS71V3SzjvUC3dud" %}

\
**A6 Postcard: 148mm x 105mm**

* 350 gsm
* Coated
* FSC Paper

<figure><img src="/files/QEp9EBXJkpx9es3G6hTM" alt="" width="279"><figcaption></figcaption></figure>

{% file src="/files/aBYXWhWVcRx3xVOo4Urh" %}

{% file src="/files/laFGUltP0mmNUqoIFYwq" %}

### United States

These paper stocks are available for any direct mail campaigns targeting the United States

\
**ZAP US Impact Postcard (6" x 8.5")**

* 350 gsm
* Coated

<figure><img src="/files/0hrzLQMK86ZOQNMPN87T" alt="" width="315"><figcaption></figcaption></figure>

{% file src="/files/cK5OroYVORXy0aCY6aTR" %}

{% file src="/files/WHxWRxVXl5DrgLQpMYXX" %}

\
**ZAP US Standard Postcard (4.25" x 6")**

* 350 gsm
* Coated

<figure><img src="/files/Ky3ymjUo54uyChDArUae" alt=""><figcaption></figcaption></figure>

{% file src="/files/LbawwtLeBztF2XOnPgNl" %}

{% file src="/files/9E186obt3UFFt3m15Dz8" %}

\
**US Occasion Card (6.75" x 10" flat, 4.99" × 6.75")**

* 350 gsm
* Coated
* folded & mailed in a plain, white envelope with address printed on

<figure><img src="/files/t20rp5V3SswBWJE72FHy" alt="" width="180"><figcaption></figcaption></figure>

{% file src="/files/BB84fR8M0TEDM0EY87ZE" %}

{% file src="/files/sW1S7KU1VsXTeTGZjfnI" %}

\
**ZAP US Secure Letter**

* 100 gsm
* Uncoated

<figure><img src="/files/ZPkU2V6Vp2WbQZ0KydkN" alt="" width="179"><figcaption></figcaption></figure>

{% file src="/files/bPEBCk7zIIyjiEmUQs5r" %}

{% file src="/files/jzhTnaBueBwt2FdaRU73" %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://userguide.zappost.com/zap-post-web-app/zap-post-user-guide/zap-app/using-the-zapp/design/useful-design-resources.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
