๐ Proudly serving Canadian businesses. CAD pricing ยท Free shipping on qualifying orders
MonโFri 9amโ6pm ET ยท โ mario@leadcustomboxes.ca
Lead Custom Boxes provides premium custom rigid mailers in Canada, engineered from 32 ECT corrugated board for maximum transit protection. With a low 100-unit MOQ and factory-direct pricing in CAD, our solutions ensure your brand arrives securely. Enhance your shipping efficiency by choosing our durable, sustainable packaging. Request a custom wholesale quotation today to secure your brand’s professional shipping identity.
Lead Custom Boxes manufactures high-performance custom rigid mailers in Canada, specifically engineered for retailers and DTC brands requiring superior transit protection. Our rigid mailers utilize 32 ECT E-flute or B-flute corrugated board, ensuring your products remain pristine from warehouse to doorstep. We provide free digital dieline proofs for every order, allowing you to verify your dimensions and branding before production begins.
Our packaging solutions are tailored to your specific product dimensions to eliminate movement and damage. We integrate advanced protective features to meet the rigorous demands of the Canadian logistics network:
| Feature | Specification |
|---|---|
| Substrate | 32 ECT E-flute / B-flute |
| Material | 100% FSC-Certified Recycled Kraft |
| MOQ | 100 Units |
| Weight Capacity | Up to 15kg (varies by size) |
| Printing | Custom Branding / Full-Colour |
| Adhesive | Sub-zero Performance Grade |
Do your custom rigid mailers meet Canada Post lettermail thickness requirements?
Our custom rigid mailers are engineered to remain under the 20mm thickness threshold, ensuring compatibility with automated sorting machines. While they meet standard lettermail guidelines, we advise verifying your total package weight to ensure it remains within the specific Canada Post weight limits for cost-efficient shipping.
What is the turnaround time for custom printed corrugated mailer boxes?
We provide free digital dieline proofs upon receipt of your artwork. Once approved, our manufacturing team prioritizes your production schedule to ensure fast, reliable shipping across all Canadian provinces via Purolator, UPS Canada, or FedEx Canada.
Pair this packaging with complementary custom containers engineered for your fulfillment and retail presentation needs:
Custom rigid mailers from Lead Custom Boxes are engineered to maintain a thickness under 20mm, ensuring full compatibility with Canada Post automated sorting machinery. We recommend verifying your total package weight against current Canada Post weight limits to optimize your shipping costs.
MANUAL SECTION โ edit here: paper stock, thickness, finishing, size range, printing, turnaround. (Same on every product. For per-product values, connect these fields to ACF via Dynamic Tags.)
| Material | Rigid board / Cardstock |
| Printing | Offset, Digital, CMYK, PMS |
| Finishing | Gloss, Matte, Spot UV, Foil, Emboss |
Check the material, print quality, and box structure before placing your full order.
$0.44
Decorate your packaging with our foil stamping.
High-gloss UV coating gives light and shine.
A glossy finish gives your packaging an extra layer of shine.
Holographic foil reveals the colours of the rainbow.
Raise the finest details of your product on the box.
Add unique graphics into your packaging.
A matte finish keeps fingerprints and smudges away.
Adds a layer of protection with a soft-touch feel.
Creating custom boxes is now easy with us. See how our process works.
Once you share the details, we will recommend the most suitable material and box style for your packaging needs.
If you upload the artwork file, we will check it for errors. If not, we will create it according to the design suggestions.
Once the design is finalized, our production team will begin producing your boxes to bring your vision to life.
When production is complete, we will pack your boxes and deliver them to your doorstep with free delivery service.
At ECB, we provide our customers with some extra services so they can get everything they need for their packaging order in one place.
You will get a free box dieline template after placing your order.
Our designers will create your box design from scratch for free.

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