A spoliation letter is a written notice telling someone to preserve evidence that could matter in a legal dispute. It doesn’t file a lawsuit or open discovery. What it does is create a documented record that the recipient knew the evidence had to be saved, which becomes serious leverage if any of it later turns up missing. Send one as soon as you identify that the other side holds relevant evidence and a dispute is forming.
When to Send One
Timing is the single most important decision, and most people wait too long. The legal duty to preserve evidence kicks in when a party reasonably anticipates litigation, not when a lawsuit is actually filed. Courts apply an objective test: if a reasonable person in the recipient’s position would have expected a lawsuit, the duty already exists.
For a potential plaintiff, that duty can arise as early as when you first believe you have a viable claim and start taking steps like consulting an attorney or gathering facts. For a potential defendant, it often triggers upon receiving a demand letter, a regulatory complaint, or any communication suggesting a claim is coming. The more obvious the dispute, the earlier the duty begins. In one well-known case, a federal court found an employer should have anticipated litigation four months before the employee filed a formal agency complaint, based on internal emails using privilege headers and employee testimony that they feared a lawsuit.
The practical consequence is urgency. If you’re involved in a serious accident, a contract dispute heading toward breakdown, or an employment situation where someone has raised formal complaints, send the letter immediately. Surveillance footage can be overwritten in days. Email servers purge deleted messages on automated schedules. A few weeks of delay can mean the most important evidence is already gone.
What to Include
A vague preservation request is almost as bad as no request at all. The letter has to be specific enough that the recipient knows exactly what to save and can’t later claim confusion. Every effective spoliation letter covers the same core elements.
- Identity of the parties and the dispute. Name the people or entities involved and describe the incident clearly, including dates, locations, and the nature of the claim.
- A statement that litigation is anticipated or already underway, so the recipient cannot argue they had no reason to expect a lawsuit.
- Specific categories of evidence to preserve. List every type of evidence you believe the recipient holds: surveillance video from specific cameras and date ranges, employee personnel files, maintenance logs, contracts, emails between named individuals during a defined window, text messages, GPS data, financial records, and any physical items like vehicles or equipment. The more detailed the list, the harder it becomes for the recipient to claim something fell outside the scope.
- An explicit instruction to suspend routine destruction. Tell the recipient to halt any automatic deletion schedules, document shredding policies, or data purge routines that might destroy relevant materials.
- A warning that destroying, altering, or failing to preserve the identified evidence may result in court-imposed sanctions, including adverse inferences, monetary penalties, or dismissal of claims.
- Contact information for follow-up, usually your attorney’s name and number, so the recipient can ask clarifying questions about scope.
A common mistake is going absurdly broad. Asking someone to preserve “all documents and communications of any kind” with no date range or subject limits invites the recipient to dismiss the request as unreasonable. Courts have recognized that preservation obligations should target unique, relevant evidence that might be useful to the other side, not every piece of paper the company has ever touched. Precision protects you twice: it makes compliance easier for the recipient, and it makes non-compliance harder to excuse.
How to Deliver It
The letter only works if you can prove the recipient got it. Certified mail with return receipt requested is the standard approach. The signed receipt comes back as documented proof of delivery and prevents the recipient from later claiming ignorance. Personal service through a process server works just as well and creates its own proof through a declaration of service. Email can supplement a mailed letter but generally shouldn’t replace it, because recipients can more easily deny receiving an email or claim it went to spam.
Keep copies of everything: the letter itself, the mailing receipt, the signed return receipt card, and any tracking confirmation. If evidence later turns up missing, that paper trail is what you’ll use to show the court the other side was on notice.
What Happens If the Recipient Destroys Evidence Anyway
The consequences depend on two things: whether the evidence was electronic or physical, and whether the destruction was negligent or intentional.
Electronic Evidence Under Rule 37(e)
Federal Rule of Civil Procedure 37(e) governs what happens when electronically stored information that should have been preserved is lost because a party didn’t take reasonable steps to save it, and the data can’t be recovered through other discovery. The rule creates two tiers based on the spoliator’s state of mind.
When the loss was negligent and the court finds it prejudiced the other party, the court can order measures no greater than necessary to cure that prejudice. That might mean allowing additional discovery, precluding certain arguments, or requiring the spoliating party to pay for recovery efforts.1Legal Information Institute. Federal Rules of Civil Procedure Rule 37 – Failure to Make Disclosures or to Cooperate in Discovery
The harsher sanctions are reserved for intentional destruction. Only when the court finds a party acted with the intent to deprive the other side of the evidence can it impose the most severe remedies: a presumption that the lost information was unfavorable to the spoliator, a jury instruction allowing or requiring the same presumption, or dismissal of the action or entry of a default judgment.1Legal Information Institute. Federal Rules of Civil Procedure Rule 37 – Failure to Make Disclosures or to Cooperate in Discovery This intent requirement is a high bar. Negligence, or even gross negligence, does not support the logical inference that the destroyed evidence was unfavorable.
Physical Evidence
Rule 37(e) applies only to electronically stored information. When physical evidence is destroyed or altered, such as a wrecked vehicle that gets repaired, a defective product that gets discarded, or surveillance equipment that gets replaced, courts rely on their inherent power to sanction litigation misconduct. That authority is broader and less structured than Rule 37(e). Courts can impose adverse inferences, exclude evidence, award monetary sanctions, or in extreme cases dismiss the action entirely if the prejudice is severe enough that the other side cannot mount a defense.
Criminal Exposure
In rare cases, intentional destruction crosses from civil sanctions into criminal territory. Deliberately destroying evidence to obstruct a legal proceeding can constitute obstruction of justice. This is uncommon in ordinary civil litigation, but it does happen when the destruction is egregious and clearly calculated to undermine a pending or anticipated proceeding.
Sending One to Someone Who Isn’t a Party
A spoliation letter sent to a non-party carries much less legal weight. Under federal law, non-parties generally have no independent duty to preserve evidence simply because they know litigation is happening between other people. Receiving a preservation letter from someone else’s attorney does not, by itself, create the same obligations it would create for an actual litigant.
If you need a non-party to preserve evidence, the more reliable mechanism is a preservation subpoena. Some courts have allowed these as a way to impose an affirmative duty on third parties to safeguard specific documents or data. To be enforceable, the subpoena must be particular about what needs to be saved. Courts have rejected subpoenas that demanded preservation of an open-ended, boundless universe of materials. The practical approach is to send the spoliation letter first as a courtesy notice, then follow up with formal legal process if the non-party doesn’t cooperate.