When to send a cease and desist letter for harassment or threatening messages

A cease and desist letter is one of the most widely misunderstood legal tools. People send them expecting legal force. They think the recipient must comply or face immediate consequences. In reality, a cease and desist letter is not a court order — the recipient is not legally required to do anything in response to it.

What it is, instead, is a formal, documented demand that signals you are serious, creates a record, and often changes behaviour. Used correctly, it can be a highly effective step before court action. Used incorrectly, it can escalate a situation or signal weakness. Understanding the difference is what this guide is about.

What a cease and desist letter is — and isn't

A cease and desist letter is a written demand, typically from a lawyer, that a person or entity stop specific conduct and not repeat it. It may threaten legal action if the conduct continues.

What it is not:

• A court order — the recipient cannot be arrested, fined, or held in contempt for ignoring it
• A substitute for a protection order or injunction
• Legally enforceable in itself
• A guarantee that the conduct will stop

What it is:

• A formal notice that puts the recipient on record as having been warned
• Evidence of your good-faith attempt to resolve the situation without court action
• A signal of seriousness that often changes behaviour
• A document that strengthens any subsequent legal action
• Sometimes, the end of the situation — many people do comply after receiving one

When a cease and desist is effective

A cease and desist tends to be most effective in situations where:

• The person sending harassing or threatening messages has something to lose — a professional reputation, a business licence, or a public position
• The conduct is impulsive or emotional rather than calculated — the formal letter creates a moment of reflection
• The person is unaware of the legal consequences of their conduct
• You have a clear, documented record of the conduct that demonstrates the seriousness of the situation
• The behaviour is clear-cut — there's no ambiguity about what was said and by whom
• You are genuinely prepared to follow through with legal action if the letter is ignored

The last point matters. A cease and desist letter that is not followed through on when ignored teaches the recipient that your threats are empty. If you send the letter, you need to be prepared to take the next step.

When a cease and desist can backfire

There are situations where a cease and desist is not the right tool, or where it could make things worse:

• When the recipient seeks confrontation. For some people, a cease and desist is gratifying — it confirms they are having an effect. This can escalate rather than discourage the behaviour.
• When the conduct is borderline. If the conduct is ambiguous — sitting near the line between unpleasant and legally actionable — a cease and desist may generate a counter-letter asserting that you are the one acting improperly.
• When there is no documentation. A cease and desist letter that refers to conduct you cannot prove is embarrassing and counterproductive. Build the record first.
• When it's premature. If the conduct has only just begun and the person could be addressed with a brief, informal message, going straight to a lawyer's letter may feel disproportionate and generate a defensive response.

What a cease and desist letter should contain

A well-drafted cease and desist letter for harassment or threatening messages should include:

• The date and the full names and contact details of the sender and recipient
• A factual summary of the conduct — what has been happening, when, and through what channels
• A reference to the relevant documentation (without necessarily including all of it — your lawyer will advise on what to attach)
• The specific conduct that must stop — be precise, not vague
• The legal basis for the demand — what law or right is being invoked
• The consequences if the conduct continues — what legal action will be taken and when
• A deadline — typically 7 to 14 days — after which you will take action if conduct hasn't stopped
• The lawyer's signature and firm details

It should not contain: emotional language, personal attacks, threats beyond what you are genuinely prepared to follow through on, or admissions about your own conduct.

What to do after sending

After the letter is sent:

• Keep a copy and note the delivery date and method
• Continue documenting any contact that occurs after the letter — this is now even more significant as evidence
• Do not engage informally with the recipient — let your lawyer manage any response
• Maintain the archive of all incoming communications from the sender
• If the conduct stops, note when it stopped. If it continues, note that too

If the cease and desist is ignored

If the conduct continues after the deadline in the letter, you have several options:

• Apply for a court order. An injunction or personal safety intervention order is an actual legal order — violating it has real consequences. The cease and desist letter strengthens your application by showing you warned the person and they continued.
• Make a police complaint. If the conduct constitutes a criminal offence (harassment, stalking, making threats), police can investigate. The cease and desist letter and the conduct that followed it are relevant evidence.
• Commence civil proceedings. For conduct that has caused financial damage — defamation, interference with business relationships — a civil damages claim becomes available. The cease and desist again strengthens this by showing you tried to resolve the matter first.
• Report to relevant regulators. In some contexts (professional licences, business registrations), reporting to a regulator may be appropriate.