Rule 39 Correspondence Guide

Rule 39 correspondence refers to confidential legal mail sent between a prisoner and their legal representative or certain authorised bodies. These protections exist to help ensure that individuals in custody are able to obtain legal advice and communicate about legal matters without their correspondence being treated in the same way as ordinary prison mail.

For legal professionals and organisations that regularly write to prisoners, correctly identifying Rule 39 correspondence is an important part of the mailing process. Clearly marking the envelope helps prison staff recognise that the contents may be subject to special handling procedures under the relevant prison rules.

It's important to understand that Rule 39 protections are intended for genuine legal correspondence. They are not designed for personal letters or general communication, and marking an ordinary letter as Rule 39 correspondence does not automatically give it legal protection. The sender is responsible for ensuring that the correspondence falls within the scope of the applicable prison rules.

Many solicitors, barristers, legal firms, charities and advice organisations choose to use a dedicated Rule 39 self-inking stamp. A stamp provides a fast, consistent and professional way to apply the required wording to every envelope. Rather than handwriting the same information repeatedly, a single impression clearly identifies the correspondence in seconds while helping maintain consistency across all outgoing mail.

A typical Rule 39 stamp features the wording "Rule 39 Correspondence" in bold, easy-to-read text. Some organisations also include their company name, department or return address, allowing the sender to be identified immediately without affecting the clarity of the main message. The design should always remain simple and legible, ensuring it can be recognised quickly during the prison mail handling process.

Choosing the correct stamp size depends on the amount of information you need to include. If the stamp only contains the Rule 39 wording, a compact size is usually sufficient. If you wish to add your organisation's name or other identifying information, a slightly larger stamp provides enough space to keep the impression clear and professional.

Black and red are the most common ink colours for Rule 39 correspondence. Black provides a traditional, professional appearance and excellent readability, while red can help the wording stand out more clearly on white or manila envelopes. Whichever colour is chosen, the impression should always be bold, clean and easy to read.

Using a dedicated stamp also reduces the possibility of handwritten wording being overlooked or misread. Every envelope is marked in exactly the same way, helping create a consistent process for organisations that send legal correspondence on a regular basis. This can improve efficiency while reducing the likelihood of errors in busy offices.

Although a Rule 39 stamp is a useful administrative tool, it does not replace the need to comply with current prison regulations. Rules and procedures may change over time, so legal professionals should ensure they remain familiar with the latest guidance issued by the relevant prison service or governing authority. If official requirements change, the wording used on the stamp should be reviewed and updated where necessary.

A quality self-inking stamp is designed to produce thousands of crisp impressions before the ink pad needs replacing. When the impression eventually begins to fade, fitting a genuine replacement ink pad will restore the stamp to producing clean, consistent markings, allowing it to continue serving your organisation for many years.

At Stamp Ninja, we manufacture personalised Rule 39 correspondence stamps using precision engraving and durable self-inking mechanisms. Whether you require a straightforward text-only stamp or wish to include your organisation's details, we'll produce a stamp that delivers sharp, professional impressions and helps you identify confidential legal correspondence quickly and consistently. Please note that it remains the sender's responsibility to ensure their correspondence qualifies for Rule 39 handling and complies with all applicable prison regulations.