What Is an Evidence Preservation Letter?

An evidence preservation letter is a written request that identifies evidence tied to a potential claim and asks the person or company holding it to keep it without destroying or changing it. Some people call it a spoliation letter.

After a crash on I-35 or a neighborhood street, evidence may sit in a tow yard, on another driver’s dashcam, or in a nearby business’s camera system. A strong preservation letter names the crash, the recipient, and each item in specific terms. The sender keeps proof of delivery.

Texas law shapes how that letter should read. Texas Rule of Civil Procedure 196.4 requires a party who later asks for electronic data in discovery to name that data specifically and state the form it should come in. The rule governs discovery requests, not the pre-suit letter itself. Writing the letter with the same precision helps keep the evidence useful later.

What Does an Evidence Preservation Letter Do?

A preservation letter tells an evidence holder about a specific crash, a potential claim, and the items that count. It does not force anyone to hand over evidence. It does not give you access to the evidence or guarantee that anyone will save it.

The letter works best when it answers concrete questions. What happened, and when and where? Who holds the evidence? Which items should they keep, and why do those items count?

That detail connects to how Texas courts look at preservation. In Brookshire Brothers, Ltd. v. Aldridge, the Texas Supreme Court explained that a party’s duty to preserve evidence arises when it knows, or reasonably should know, that there is a substantial chance of a claim and that it holds material, relevant evidence. That duty can arise before anyone sends a letter.

A letter helps document notice. Receipt alone does not prove spoliation, and not every recipient takes on the same duty.

If evidence goes missing, a judge decides whether spoliation happened and what remedy, if any, fits.

A jury instruction about lost evidence is not automatic. The court generally reserves it for intentional destruction, with a narrow exception for careless loss that irreparably prevents a party from presenting a meaningful claim or defense.

Whether you handle the early steps yourself or work with Texas car accident lawyers, the practical goal stays the same. Keep the evidence from disappearing in the first place.

Who Should Receive a Preservation Letter After a Crash?

Send a separate, tailored letter to each person or organization that may actually possess or control the evidence. The right recipients depend on who holds evidence from your crash.

Start by identifying the evidence each potential recipient holds:

• The other driver and vehicle owner may hold the vehicle, its data module, dashcam recordings, and narrowly relevant phone material.
• A commercial operator or employer may hold fleet records, company camera footage, relevant communications, and maintenance records when a work vehicle was involved.
• An insurer or claims representative may hold inspection photos, recorded statements, and records showing what happened to the vehicle. Identify whoever physically holds the vehicle separately.
• A tow yard, storage lot, repair shop, or salvage custodian may hold the vehicle and removed parts. Ask that they preserve those items before repair, disposal, or alteration and coordinate an inspection.
• A nearby business or property manager may hold footage from cameras covering the crash location and time. Ask who controls the recording system if the addressee does not.

Copying an insurer does not reach every evidence holder. A business with a camera pointed at the intersection is not automatically a party to any claim. A letter to that business asks for cooperation. It is not a subpoena, and it gives no one permission to enter the property.

If formal access becomes necessary, Texas Rule of Civil Procedure 205 sets out separate procedures for discovery from nonparties. Collisions involving 18-wheelers often add more record holders, which is one reason truck accident claims can call for several letters at once.

What Evidence Should the Letter Identify?

The letter should attach an itemized list that names each source in enough detail for the recipient to find it and keep it in its original form. Rule 196.4 explains why precision pays off. When a party requests electronic data later in discovery, it must specify the data and the form it wants.

That rule does not set formal requirements for a pre-suit letter. A letter that already names the files and formats, though, helps later requests reach useful originals.

Tailor the attachment to the evidence relevant to your crash:

• The vehicle and its data module. Include the VIN or another available identifier, make and model, current location, involved components, the event data recorder or relevant control module, and any existing download files or reports. Ask for coordination before anyone makes changes that could affect inspection or data.
• Dashcam data. Name the vehicle or device, camera view, crash date, relevant time window and time zone, original files, timestamps, and any stored copies.
• Phone data. Identify the device or user if known, and narrowly describe crash-related calls, messages, photos, or app data within a justified period. Ask for retention. Do not demand passwords or a lifetime of phone contents.
• Nearby business video. List the business address, crash location, camera direction, date, time window, and the original recording files with their timing information. Ask the business to keep relevant footage from being overwritten.
• Maintenance records, when relevant. Name the vehicle, relevant period, inspections, repair orders, and service history, including records about conditions such as brakes or tires.

Keep vehicle data and camera footage as separate items. The NHTSA overview of event data recorders explains that these devices capture technical vehicle and occupant information around a crash, and the federal definition excludes audio and video. Not every vehicle records the same facts.

For covered commercial carriers, 49 CFR §396.3 requires inspection, repair, and maintenance records, including vehicle identification and dated records of work. Those federal duties apply only to covered operations, not to every private driver.

Preserving data also differs from retrieving it. Texas Transportation Code §547.615 limits who may pull information from certain manufacturer-installed recording devices, with specific exceptions such as owner consent or a court order. A preservation letter does not authorize anyone to download a vehicle’s data.

Phones call for the same caution. Careless handling can lose digital contents, so leave any extraction to qualified help.

How Should You Document & Send the Letter?

The letter, its itemized attachment, and proof of delivery together form the record of what you asked for and who received notice. That record helps document notice. It does not prove anyone actually saved the evidence.

Follow these steps for each recipient:

1. Identify the basics. Include the sender, the recipient, the crash date and location, the vehicles or people involved, and any claim number.
2. Explain the connection. Describe the potential claim and why this recipient may hold relevant evidence.
3. Attach a dated, itemized list. Tailor it to that recipient, with source identifiers and time windows tied to the crash.
4. Request specific action. Ask the recipient to keep the identified originals and their timing information, and to address any routine deletion or overwrite process.
5. Ask for a response. Request written confirmation, a responsible contact, and prompt notice if an item is missing or may be changed or thrown away.
6. Keep a complete file. Save the exact letter and attachment you sent, the recipient’s address, the send date, tracking or delivery receipt, any acknowledgments, and all follow-up correspondence.

Use a tracked delivery method and request a written acknowledgment to help document notice. These are practical choices for documenting delivery, not prescribed service requirements for a standalone preservation letter. Any reply date you set is a request.

Speed still counts. Camera systems and storage lots each follow their own schedules, and no universal rule tells you how long footage or a damaged vehicle will last.

Ask Angel Reyes & Associates About Preserving Crash Evidence

Sorting out who holds what after a crash takes energy you may need for your recovery. Angel Reyes & Associates can help you consider which evidence matters and who may hold it.

Contact us for a free consultation to talk through the evidence in your situation and who should receive a request. Our attorneys are here to help.

Past results do not guarantee future outcomes.