Evidence drop shipping is an informal phrase for sending possible evidence or investigative information to authorities without meeting an investigator directly. Treat it as a description, not the name of a standard U.S. government intake service.

If you have an item, file, device, sample, or other information that may matter, contact the relevant agency first. Ask whether it wants the physical item and how it wants that item preserved or delivered. Don't put an unknown substance, weapon, biological sample, suspicious package, or electronic device into an ordinary parcel on your own.

Start with safety

If anyone is in immediate danger, call 911. The U.S. Department of Justice says to report emergencies immediately and provides links for non-emergency crime reports through its crime and complaint reporting page.

Treat a suspicious package as a safety issue, not a shipping project. USPS says suspicious mail may be unusually heavy for its size, lopsided, leaking an unknown substance, or marked with restrictive endorsements such as "Personal" or "Confidential." Don't open, shake, smell, carry, or mail it. Move away if you can do so safely, then follow instructions from emergency responders. See USPS's suspicious package information.

Choose an official reporting channel

Use the channel that fits the situation:

USA.gov says most local law-enforcement agencies accept anonymous tips or crime reports online or by phone. The FBI also says you can provide whatever contact information you feel comfortable sharing. That doesn't mean every submission is anonymous, confidential, or guaranteed to receive a response, so check the agency's own instructions before submitting.

The FBI describes its website as an intake point: FBI personnel review information submitted by individuals, and information with investigative merit may be routed according to whether it concerns a criminal, counterterrorism, or counterintelligence matter. Its Internet Tip Line explanation describes that review process. It doesn't promise that a mailed object will be accepted, tested, or used in court.

Preserve information without creating new risks

If the item isn't dangerous and you can document it safely, preserve the facts rather than trying to conduct your own forensic examination.

1. Write down the basics. Record when and where it was found, who found it, its condition, and what you personally observed.
2. Describe actions accurately. Note whether it was moved, opened, copied, powered on, or handled by anyone else. Don't guess about missing details.
3. Minimize handling. Leave an object where it is when practical. If you've already moved it, avoid further handling and tell investigators exactly what happened.
4. Don't test or clean it. Avoid wiping surfaces, collecting fingerprints, taking biological swabs, opening containers, or combining substances.
5. Protect digital originals. Don't plug an unknown USB drive into a computer, open its files, rename them, or upload them for public review. For a phone or computer already in your possession, ask the agency before turning it on, turning it off, or charging it. If documenting a device is safe, record its screen and identifying markings without changing its contents.
6. Keep the information private. Posting photographs or files online can expose personal information and make later verification harder.

General evidence-preservation guidance from the UN's International Independent Investigative Mechanism recommends recording dates, locations, handlers, movement, storage, and identifying details. It also recommends starting a chain-of-custody log as soon as possible. That guidance can help you organize facts, but it isn't a U.S. rule that guarantees courtroom admissibility.

Ask before mailing or transporting anything

Before using USPS, FedEx, or another carrier, contact the agency through an official phone number or website. Tell it what category of item you have. Ask:

• Whether the agency wants the physical item at all
• Whether an officer, investigator, or approved facility should collect it
• Whether you should bring it to a station or use a specific delivery address
• What packaging, labeling, temperature, or handling instructions apply
• Whether you need a report or tip number
• How you will receive confirmation of delivery

Don't send a physical item to a generic agency address simply because you found it online. An intake address may be for correspondence, not evidence. Follow the agency's instructions exactly, and don't conceal or misdescribe the contents to make a package appear ordinary.

Carrier rules are separate from evidence rules

USPS Publication 52 covers hazardous, restricted, and perishable mail. USPS also explains that some biological substances may be mailed only when specific domestic packaging and regulatory conditions are met. For international mail, USPS's international restrictions add destination-country requirements; each country can restrict items differently.

FedEx's dangerous-goods shipping guidance likewise explains that requirements can vary by item, transportation mode, and service. A carrier's acceptance scan shows only that the carrier accepted a parcel for handling. It doesn't establish that the item was safe to mail, lawfully sent, properly packaged, or suitable as evidence.

Don't place firearms, ammunition, explosives, unknown powders or liquids, human or animal specimens, drugs, or other potentially hazardous materials in a regular parcel without explicit instructions from the responsible agency and compliance with applicable shipping rules.

What chain of custody really requires

A tracking number records carrier scans. A signature records that someone received the parcel. Neither one proves:

• Who originally found or created the item
• Whether the contents were authentic
• Whether the item changed before mailing
• Who handled it between discovery and shipment
• Whether it was lawfully obtained
• Whether a court will admit it

A tamper-evident seal can document that a package appears to have been opened after sealing, but no consumer seal is truly tamper-proof. QR codes, GPS trackers, blockchain records, photographs, and delivery scans can supplement a record; they don't replace accurate notes and the agency's own collection and custody procedures.

If an investigator asks you to transfer an item, provide your factual timeline and disclose every person who handled it. Don't backdate notes or fill gaps with assumptions. Whether material can be used in court depends on the applicable state or federal rules and the facts of the case.

Anonymous reporting: useful, but limited

An anonymous tip can reduce the amount of personal information you share, but it can also make follow-up difficult. Investigators may be unable to ask clarifying questions, verify your account, explain what to do with an item, or tell you whether they received it.

A missing return address also doesn't guarantee that a physical shipment is untraceable. Postal and delivery systems may create handling records, and the package itself can create safety and custody concerns. If retaliation is a concern, say so when you contact the agency and ask what anonymous or confidential reporting options it offers.

Don't use dark-web marketplaces, unknown couriers, or informal "dead drop" services as a substitute for contacting an agency. The official sources above describe agency websites, phone lines, and emergency services, not those services as law-enforcement evidence channels.

Common questions

Is evidence drop shipping an official service?

The official U.S. sources cited here describe emergency services, agency tip lines, phone contacts, and evidence-preservation practices. They don't identify a standardized government service called evidence drop shipping. Contact the responsible agency before sending anything physical.

Can I mail evidence anonymously to the police?

Don't assume that you can. Some agencies accept anonymous tips online or by phone, but a physical evidence handoff may require specific instructions. Contact the agency first and ask whether it wants the item, who should receive it, and how to document the transfer.

Will an anonymous package be admissible in court?

Not automatically. An anonymous package may provide a lead, but admissibility can depend on authentication, handling, the source of the item, and the rules governing the case. Tracking or tamper-evident packaging alone doesn't settle those questions.

What should I do with an unknown USB drive?

Don't plug it into a computer, browse its contents, or connect it to another device for power. Keep it disconnected, record its appearance only when safe, and ask investigators for handling instructions. If it presents a physical safety concern, move away and contact emergency services.

Can I send a biological sample through USPS or FedEx?

Some biological materials may be transportable under detailed rules, while others are restricted or prohibited. Don't package or mail a sample based on a general online checklist. Tell the agency exactly what it is and follow the agency's instructions along with the carrier's current requirements.

What is the safest next step?

If there is immediate danger, call 911. Otherwise, use the official reporting channel for the local agency, FBI, or other responsible authority, describe what you have without altering it, and wait for instructions before mailing or transporting physical evidence.