Mailer Security Bags
Trusted by Fortune 500 companies nationwide • Made in USA • Ships within 24 hours
Tamper-Evident Security Mailer Bags for High-Value Shipments
Ship Confidently. Protect Completely. Prove Tampering Instantly.
Creating Value Through Security
The Problem Standard shipping envelopes and poly mailers provide zero evidence when packages are opened during transit. Whether shipping documents, electronics, pharmaceuticals, or high-value items, you have no way to prove if tampering occurred—leaving you vulnerable to theft, disputes, and liability claims.
The Solution Alert Security Mailer Bags feature our proprietary tamper-evident seal technology with sequential serial numbering and permanent VOID indicators. From the moment you seal your package until your customer opens it, you have complete assurance and indisputable proof if tampering occurs.
The Result Eliminate shipping disputes, reduce fraud claims by up to 92%, and protect your reputation with mailers that provide visible tamper evidence. One e-commerce retailer reduced “item not received” chargebacks by $47,000 annually after switching to our security mailers.
Instant Tamper Detection You Can See and Prove
- Permanent VOID pattern appears when tampered
- Cannot be reversed or concealed
- Deters 73% of all theft attempts
- Protects from internal and external threats
Sequential Serial Numbers Create Complete Accountability
Superior Protection Saves Money and Reputation
Superior Protection Saves Money and Reputation
The real cost of package tampering extends far beyond the replacement value of stolen items. Consider the complete financial impact: product replacement costs, shipping fees for reshipment, customer service time investigating the claim, potential chargeback fees ($15-25 per incident), damage to customer relationships, and harm to your brand reputation when customers lose trust in your packaging security.
Alert Security Mailer Bags eliminate or dramatically reduce all these costs simultaneously. The tamper-evident feature alone reduces fraudulent “item not received” claims by providing objective evidence—many customers who might otherwise file a false claim simply don’t bother when they know the package will show tampering evidence. Legitimate theft is deterred by the visible security features, and when it does occur, you can confidently file insurance claims backed by physical evidence.
The cost comparison is compelling. Our security mailers cost just $0.75-$2.50 per unit depending on size and volume, while a single fraudulent chargeback can cost $50-$150 in fees, lost merchandise, and processing time. If our mailers prevent just one fraudulent claim per month, they’ve paid for themselves many times over.
Beyond direct cost savings, the reputation protection is invaluable. Customers who receive their orders in professional, tamper-evident packaging perceive your business as trustworthy and professional. One jewelry e-commerce company saw their repeat purchase rate increase by 23% after switching to security mailers—customers explicitly mentioned “secure packaging” in positive reviews, demonstrating that security features build brand loyalty.
The tear-resistant, puncture-proof polyethylene construction also protects against accidental damage during shipping, reducing claims from legitimate handling issues and ensuring your products arrive in perfect condition.
Visual: Cost savings infographic comparing standard mailers vs. security mailers with annual ROI calculation
Dead Simple to Use, Impossible to Compromise
Product Features & Specifications
NEEDS TO BE UPDATED!!!!!
Maximum Protection for Every Deposit
Security Features
Tamper-Evident Seal
Proprietary adhesive closure with ALERT/VOID message that permanently reveals tampering
Dual Serial Numbers
Consecutive numbering on bag and tear-off receipt for owner/facility verification
Barcode Tracking
Compatible with automated scanning and property management systems
Sequential Roll Packaging
Continuous security tracking with missing bag detection
Tear-Resistant Material
High-strength polyethylene construction resists punctures and tears
Water-Resistant
Protects contents from moisture and environmental exposure
Essential Documentation Tools
- Pre-Printed Information Block: Guided fields for owner name, date, time, contents, and staff signature
- Tear-Off Receipt: Detachable proof for property owner with matching serial number
- Large Writing Surface: Easy to complete with pen or marker in any environment
- Permanent Ink Adhesion: Writing won't smudge or fade during storage
- Inventory Checklist: Space to document multiple items and their condition
Healthcare Compliant
Meets HIPAA requirements for patient property management
Correctional Standards
Satisfies detention facility property control protocols
Insurance Recommended
Reduces liability insurance premiums for many facilities
Audit-Friendly
Creates paper trail for internal reviews and external audits
Technical Specifications - MISSING!!!!!! OR IS IT THE SAME ACROSS PRODUCTS???
| Specification | Details |
|---|---|
|
Material |
High-density polyethylene (HDPE) |
|
Seal Type |
Pressure-sensitive adhesive with tamper-evident VOID pattern |
|
Serial Number Format |
Dual consecutive numbering, 6-digit sequence |
|
Barcode Standard |
Code 39, compatible with most scanners |
|
Thickness |
3.0 mil (0.076mm) |
|
Temperature Range |
-40°F to 140°F (-40°C to 60°C) |
|
Weight Capacity |
Up to 25 lbs (11.3 kg) depending on size |
|
Tear Strength |
480 g/mil (Elmendorf method) |
|
Water Resistance |
IPX4 rated (splash resistant) |
|
Compliance |
Federal Reserve Guidelines, Bank Secrecy Act |
How It Works
Secure Your Shipments in 3 Simple Steps
Step 1: Insert Contents Place your items inside the mailer. The flexible material accommodates irregular shapes while maintaining a professional appearance. Note the serial number if you’re tracking shipments in your order management system.
Step 2: Seal the Mailer Peel away the protective strip to expose the permanent adhesive. Fold the flap down smoothly, ensuring full contact across the seal area. Press firmly for 2-3 seconds to create the tamper-evident bond.
Step 3: Ship with Confidence Apply your shipping label and send your package. The tamper-evident seal provides visible security throughout transit. Upon delivery, your customer will immediately see if tampering occurred—the intact seal proves package integrity.
Various Sizes to Meet A Variety of Use Cases
Choose the Perfect Bag for Your Needs
| Feature | Options | Best For |
|---|---|---|
| Size | 6×9″ | Cell phones, wallets, small electronics, keys |
| 8×10″ | Tablets, small purses, medical devices | |
| 9×12″ | Standard purses, shoes, clothing items | |
| 12×18″ | Jackets, backpacks, multiple items | |
| 15×20″ | Large bags, coats, bulk personal property | |
| Material | Clear Poly | Visible verification, lost & found, quick ID |
| Opaque White | Privacy protection, sensitive items, healthcare | |
| Quantity | 250 bags/roll | Standard supply, sequential numbering |
| Custom Quantities | Available for trial periods or high-volume users | |
| Customization | Stock | Ready to ship, industry-standard features |
| Custom Printed | Your logo, specific fields, color coding systems |
Not sure which option is right for you?
Applications and Industries
Trusted Across Industries
E-Commerce & Retail High-value product shipments, electronics, jewelry, designer apparel, collectibles, limited editions, customer returns processing, warranty replacements, subscription box services
Pharmaceuticals & Healthcare Prescription medications, medical samples, clinical trial materials, diagnostic kits, patient specimens, medical device components, pharmaceutical samples, healthcare documentation, HIPAA-compliant document shipping
Electronics & Technology Mobile devices, computer components, cables and accessories, refurbished equipment, warranty repairs, replacement parts, software media, USB drives, memory cards, testing equipment
Financial Services Credit/debit card delivery, checkbooks, financial documents, account opening kits, signature cards, confidential client records, compliance documentation, loan documents, investment materials
Legal & Professional Services Confidential legal documents, court filings, contracts requiring signatures, evidence materials, client records, certified mail alternatives, depositions, discovery materials, compliance records
Jewelry & Luxury Goods Fine jewelry shipments, watches, precious metals, gemstones, designer accessories, collectible coins, authenticated memorabilia, luxury cosmetics, high-end fashion items
Cannabis & CBD Compliant product shipments, lab testing samples, medical marijuana delivery, CBD products, packaging that meets state regulations, age-verification required items, controlled substance documentation
Education & Testing Standardized test materials, confidential exam documents, diploma delivery, transcripts, certification materials, student records, research materials, laboratory samples
Government & Municipal Sensitive documents, voter registration materials, permit applications, license delivery, law enforcement evidence, inter-departmental confidential transfers, public records requests
Manufacturing & Distribution High-value component shipping, prototype delivery, quality control samples, supplier parts, customer replacements, warranty claims, RMA processing, precision instruments
FAQ
The security difference is substantial and immediately visible. Regular poly mailers can be carefully opened with heat, solvents, or patient manipulation and then resealed with no evidence of tampering. Our tamper-evident mailers use a specialized adhesive technology that permanently bonds on contact and leaves an irreversible “VOID” pattern the instant anyone attempts to open them.
The practical impact is significant: regular mailers provide zero proof if tampering occurs, leaving you vulnerable to fraudulent claims and unable to file insurance claims with confidence. Our tamper-evident mailers provide objective, photographic evidence that protects both you and your customers. Security studies show visible tamper-evident packaging deters 73% of theft attempts simply by being present—potential thieves move on to easier targets.
Additionally, our sequential serial numbering creates accountability that standard mailers cannot provide. You can track specific shipments, identify patterns in claims, and maintain chain-of-custody documentation that satisfies compliance requirements in regulated industries.
The moment the seal is disturbed, a permanent “VOID” pattern appears across the entire adhesive closure. This pattern cannot be removed, hidden, or reversed—it’s a permanent chemical change in the adhesive material itself. The pattern is designed to be highly visible and photographic, meaning anyone opening the package will immediately see the evidence.
Even sophisticated tampering attempts cannot defeat the system. Some people try to open from the sides or bottom, but the polyethylene material tears visibly rather than opening cleanly. Others attempt to use heat or cold to soften the adhesive, but our formulation is specifically designed to resist these methods and will still show the VOID pattern even if partially opened.
The dual-layer security means even if someone somehow defeated the outer seal (which we’ve never seen successfully accomplished), the inner material would show obvious distortion, tears, or damage. For customers, it’s simple: if the seal is intact, the package hasn’t been opened. If the VOID pattern is visible, tampering occurred.
Absolutely. Alert Security Mailers are accepted by all major international carriers including USPS International, FedEx International, UPS Worldwide, and DHL Express. The tamper-evident features are particularly valuable for international shipments, which face higher theft risk due to longer transit times and multiple handling points.
The mailers comply with international shipping requirements and customs regulations. The opaque material allows customs declarations and international shipping labels to be applied clearly. Many international shippers actually prefer tamper-evident packaging specifically because it provides visible evidence if packages are opened during customs inspection—legitimate customs inspections will note the opening, while unauthorized tampering becomes immediately obvious.
For high-value international shipments, we strongly recommend our serial-numbered mailers combined with signature confirmation delivery. This creates complete documentation from your facility to the international customer’s signature, satisfying insurance requirements and providing maximum dispute protection.
The dual consecutive serial numbers create accountability at both ends of the transaction. When you seal property, the owner receives a tear-off receipt with Serial Number A, while the matching Serial Number A stays on the bag in your storage. When they return to claim their property, they present their receipt, you match it to the bag, and both parties verify the serial numbers match. The sequential numbering also alerts you immediately if a bag goes missing from the series—if bags #7744 and #7746 are in storage but #7745 never arrived, you know there’s an issue to investigate.
Yes, dramatically. The sequential serial numbering creates a secondary tracking system that works alongside your shipping carrier’s tracking numbers. Here’s how businesses use this to improve operations:
Customer Service: When a customer contacts you about a package issue, you can immediately identify the specific mailer number associated with their order. If they claim tampering, you can ask them to verify the serial number, which helps distinguish legitimate issues from fraudulent claims.
Inventory Control: Missing serial numbers in your sequence immediately alert you to potential issues. If you’ve sealed bags #1001 through #1100 but notice #1047 is missing, you know to investigate before customer complaints arise.
Internal Accountability: Assigning specific serial number ranges to different shifts or employees creates natural accountability. If problems consistently occur with certain number ranges, you can identify process issues or training needs.
Compliance Documentation: For regulated industries, the serial numbers create an auditable chain of custody. You can prove exactly which package was used for specific shipments, satisfying regulatory requirements for controlled substances, pharmaceuticals, or high-value items.
Analytics: Over time, the serial numbers let you analyze patterns in claims. Are certain sizes more likely to experience issues? Do problems occur more frequently with specific carriers or routes? This data helps you optimize your shipping process.
For high-volume operations, our custom printed mailers can include barcode integration with your serial numbers, allowing automated scanning at multiple checkpoints in your fulfillment process.
Absolutely! Custom printing is one of our most popular options for businesses serious about branding and security. Custom printed mailers include:
Branding Elements:
- Your company logo (full color or single color depending on quantity)
- Custom colors matching your brand palette
- Marketing messages or taglines
- Website and contact information
- Social media handles
Security Enhancements:
- Custom security warnings
- Specialized handling instructions
- Unique serial number formats (including your company prefix)
- Verification codes or QR codes customers can scan
- Multi-language security messages for international shipping
Professional Advantages: Custom printed mailers elevate brand perception significantly. Customers receiving a package with professional branding perceive your business as more established and trustworthy. The custom packaging also provides free marketing—your logo is visible to everyone who handles the package during shipping and to the customer when they receive it.
Innovations In Packaging
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Alert Security Mailer Bag
Keep Sensitive Deliveries Protected From Unauthorized Eyes
Based on the same materials and security technologies as our other Alert Security Products, the Alert Security Mailer Bag offers important advantages over the traditional mailing envelope:
- High impact graphics
- Tamper evident security seal closure
- Waterproof materials
- Light weight and puncture resistant
When presenting your message or communicating information to your clients, partners or other colleagues, graphics have a considerable impact on the ability of your envelope to drive the interest of the receiver to open it immediately or file it. In today’s world of information overload, only the high impact package gets high priority attention.
Beyond the graphic appeal, your Alert Security Mailer can be custom built with any of the security features of our other Alert Security Products. This includes Standard or Maximum Security “void” tape closures, serial numbers and receipts. And the Alert Security Mailer Bag comes in the easy to use continuous roll form.
Our customer service representatives can assist you in the design of your custom Alert Security Mailer Bag. E-mail, fax or call for design assistance and quotation.
Request a free sample and see the impact of an Alert Security Mailer Bag and see how it can benefit your direct mail needs.
Security Features???
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It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using ‘Content here, content here’, making it look like readable English. Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model text, and a search for ‘lorem ipsum’ will uncover many web sites still in their infancy.