Terms of Use

Courier — version 1.0, 18 October 2026 — the terms the Courier installer shows

1. Agreement

1. 1.1These terms are an agreement between you, or the organisation you act for (“you”), and RSJ Software Ltd, a company registered in England and Wales (“RSJ Software”, “we”, “us”).
2. 1.2By installing or using Courier (the “Software”) you accept these terms. If you do not accept them, do not install or use it. If you install it for an organisation, such as a school, an academy trust or an IT company that supports one, you confirm you may accept these terms on its behalf.

2. Courier is free

1. 2.1Courier is free of charge. There is no paid edition, no licence key and no limit on the number of computers or people you send to. Nothing in these terms makes you pay us anything.
2. 2.2We may stop publishing new versions, or change what the Software does in a later version. A version you have installed keeps working under these terms.

3. Your licence

1. 3.1We grant you a non-exclusive, non-transferable licence to install and use the Software to send notices to computers owned or run by your organisation. An IT support company may install and run it for a school or trust it supports, on that organisation’s behalf.
2. 3.2You may copy the installer within your organisation, and to the organisations you support under 3.1. Please do not publish it elsewhere; point people to our website instead.
3. 3.3You must not:
   • remove or change RSJ Software’s name or copyright notices;
   • decompile or reverse-engineer the Software, except as far as the law allows you to whatever these terms say;
   • sell, rent or sub-license the Software.
4. 3.4We keep ownership of the Software and everything in it; you own your own data.

4. What Courier is, and is not

1. 4.1Courier lets people you choose write a short notice, choose which computers or people it is for, and send it one way, to those computers. The RSJ Agent, a separate program on each computer, shows the notice on screen to a person who is signed in and lets them press Acknowledge. Courier shows you, for each computer, how far a notice got.
2. 4.2Courier is not an emergency or guaranteed-delivery system. It is not designed, tested or supported for emergencies, lockdowns, evacuations, safeguarding alerts or any other message where a delay or a failure could put someone at risk, and you must not rely on it for any of them. A notice may not reach a computer, may arrive late, or may not be seen. For example, the computer may be off, asleep, locked or signed out; nobody may be signed in; the network or the Courier server may be down; the RSJ Agent may be stopped, out of date or not installed; or the notice may have reached the end of the time you gave it before the computer was able to show it. Keep the other ways you already have of raising an alarm and reaching people.
3. 4.3The delivery states Courier shows are reports of what the computer said happened, and no more. “Displayed” means the notice was put on a screen, not that anyone looked at it or read it. “Acknowledged” means someone pressed Acknowledge, not that they understood it. A notice that has expired was not necessarily seen.
4. 4.4Courier sends what you tell it to. You choose the text and the recipients, and the preview before you send is there so that you can check both. A notice for named people goes to the computers where those people are signed in at that moment, according to what each computer reports.
5. 4.5Courier is one-way: people cannot reply to a notice through it. Courier is designed to show notices and to report delivery. It is not designed to monitor what people do on their computers, and we do not offer it for that.

5. Your responsibilities

You are responsible for the server the Software runs on and its security; the accounts you create for people to send notices, and who may do so; keeping the agent secret private (anyone holding it can register a computer with your server); what your notices say, and that you are allowed to send them; any directory account you give it, and making sure you are allowed to read what that account reads; keeping your own backups; and not using the Software unlawfully, to harass or mislead people, or to send to computers you are not authorised to send to.

6. Data protection and privacy

1. 6.1The Software runs on your own infrastructure. The notices you write, who sent them and to whom, the names of the computers and people they were for, the delivery records and anything it reads from your directory stay on your server and are not sent to us. For that data we are not your data processor. How long Courier keeps the history is your choice in Settings, and it is a year unless you change it.
2. 6.2As built today, the Software does not send us any information about your installation or your use of it. Its own only contact with the outside world is the update check: when you check for or install an update (or have switched on automatic updates), your server asks GitHub for the new version, and GitHub sees your server’s address as it would for any web request, under GitHub’s own terms. Anything you choose to send us, such as an email asking for help, is yours to decide. If we ever add a way for Courier to send us information, these terms and a privacy notice will say so before it does, and it will not include the text of your notices or the names of the people they are for. Our Privacy Notice sets out what Courier holds and where it goes.
3. 6.3If you connect Active Directory so that you can address groups, Courier reads group membership with the read-only account you give it. That account’s password is kept on your server, protected by Windows, and is never shown again.

7. Warranty and liability

1. 7.1Nothing in these terms limits liability for death or personal injury caused by negligence, for fraud, or for anything else the law does not allow to be limited.
2. 7.2Because Courier is free, it is provided “as is”, without any warranty, including any implied warranty of satisfactory quality or fitness for a purpose, as far as the law allows. Subject to 7.1, we are not liable for any loss arising from your use of it or your inability to use it, including a notice that was not delivered, was delivered late or was not seen.

8. Ending

1. 8.1These terms last until ended. You may end them at any time by uninstalling the Software.
2. 8.2We may end your licence if you seriously break these terms.
3. 8.3When these terms end you must stop using the Software. Sections 4, 6 and 7 continue.

9. Changes to these terms

We may update these terms. The version shown when you install or update the Software applies from then on.

10. General

1. 10.1These terms are governed by the law of England and Wales. Its courts have jurisdiction, but this does not stop a school in Scotland or Northern Ireland using its own courts where its law gives it that right.
2. 10.2If a court finds part of these terms unenforceable, the rest still applies. Not enforcing a term straight away does not mean we have given it up. Nobody else can enforce these terms.

11. Contact

RSJ Software Ltd — hello@rsjsoftware.com. Our company number and registered office are on the Companies House register.