What to do when your startup receives a legal letter: a practical first-response guide

Finding a formal legal letter in your startup’s post or inbox can feel unsettling. Maybe it claims you have breached a contract, infringed someone’s intellectual property, or demands payment you were not expecting. However alarming the words on the page, your first response matters. A few simple, careful steps can keep you in control and prevent a difficult situation from escalating unnecessarily.

what counts as a legal letter

For the purposes of this guide, a legal letter is any written communication from a law firm, a solicitor acting for another party, or sometimes from the other party themselves if it sets out a formal grievance or warning. It could be:

• a letter before action, threatening court proceedings unless you do something by a deadline
• a cease and desist letter over alleged trademark or copyright infringement
• a solicitor’s demand for payment of an unpaid invoice or debt
• a notice alleging breach of contract and requiring remedy
• a letter from a regulator or a data subject exercising legal rights

Even if the letter arrives by email, treat it with the same seriousness as a hard copy letter on headed notepaper.

do not ignore it

The worst thing you can do is set the letter aside and hope it goes away. Ignoring a letter before action could lead to a default judgment if proceedings are issued. Ignoring a data subject access request can trigger a complaint to the Information Commissioner’s Office. Put a reminder in your calendar now and follow a process.

Equally, do not fire off an instant reply, especially if you are angry or anxious. A rushed, emotional response can make untended admissions, escalate tensions, or weaken your legal position.

three immediate practical steps

1. Read it carefully and note the deadline. Many letters give you 7, 14 or 28 days to respond, remedy something, or pay a sum. The clock may start from the date of the letter, not the date you received it. Mark the deadline visibly.

2. Save a copy and log it. Keep the original letter and envelope if it arrived by post. Save the email in a dedicated folder, not just your inbox. Make a brief, factual note of when it arrived and how. This helps if later there is a dispute over timing.

3. Stop any ongoing activity the letter complains about (if safe to do so). If you are being asked to stop using a logo, take the image down temporarily while you investigate. If it is about a social media post, consider archiving it. You can always restore things later if the claim proves unfounded, but continuing the activity may be seen as aggravating behaviour.

do not admit anything, even casually

A legal letter is not the time for an apology email saying “sorry, our mistake”. Admitting liability, even unintentionally, can hamper your options later. Stick to neutral language if you must acknowledge receipt. A simple “We confirm receipt of your letter dated [date]. We are taking advice and will respond in due course” buys time without conceding anything.

know when to involve a solicitor

You do not necessarily need a solicitor for every letter. A routine request for a modest refund might be handled in-house with a calm, factual reply. However, you should speak to a solicitor promptly if:

• the letter threatens court proceedings
• the sums claimed are significant for your startup
• the subject is complex (intellectual property, defamation, equity disputes)
• you are uncertain about the legal basis of the claim
• the letter comes from a regulator

When you instruct a solicitor, send them the letter together with any relevant contracts, emails, or internal notes. A clear chronology and a folder of key documents will reduce your legal costs and speed up the advice.

check your insurance

If you have directors and officers (D&O) insurance or legal expenses cover as part of your business insurance, check the policy now. Some policies require you to notify the insurer within a certain timeframe when you receive a claim or a potential claim. Early notification can help you understand whether legal costs will be covered.

avoid common mistakes

• Debating the merits directly with the other side without legal advice. You may give away factual points you did not need to share or inadvertently accept a liability that could have been challenged.
• Panic-delaying and missing the deadline. If you need more time, ask for it in writing as soon as you know. Many solicitors will agree a short extension if you show you are engaging properly.
• Deleting anything relevant. Never destroy documents, emails, or messages once a legal letter arrives. Even if you think they are unhelpful, deletion can be seen as spoliation and can damage your credibility if a dispute escalates.
• Assuming someone else in the team is handling it. In a small startup, responsibility can slip between founders. Agree who will own the response and set a clear internal deadline at least a few days before the external deadline.

decide on a simple system for future legal post

After this experience, you might set up a dedicated inbox like legal@ your domain or a shared folder in your document hub. That way, if another letter arrives, it lands where the right people see it immediately, even if one founder is away.

finally

Receiving a legal letter does not automatically mean your startup is heading to court. Many matters resolve with a sensible, timely exchange of information. What matters most is that you stay calm, keep records, avoid off-the-cuff correspondence, and get professional input when the stakes justify it. This article is not legal advice. If you are unsure about your position, always consult a solicitor who understands your business.