Custom Size Mailer Boxes

Say goodbye to wasted space and high shipping costs with PackagingBull’s custom size mailer boxes UK. Tailored to your product dimensions, our printed custom size mailer boxes provide a snug, secure fit and a professional unboxing experience. Made from sturdy corrugated cardboard material, our boxes offer excellent protection while supporting sustainable packaging goals. Add your logo, brand colors, or product info for a personalized touch. Whether small or oversized, our custom mailer boxes are engineered to meet your needs. Contact us today to design your perfect fit! We offer the custom branded mailer boxes with outstanding offset printing and premium flute corrugated stocks for safe the product during the transits.

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Unit Price: £0.50 for 1000

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Box Style Custom Size Mailer Boxes
Dimension (L + W + H) All Custom Sizes & Shapes
Quantities No Minimum Order Required
Paper Stock 10pt to 28pt (60lb to 400lb) Eco-Friendly Kraft, E-flute Corrugated, Bux Board, Cardstock
Printing No Printing, CMYK, CMYK + 1 PMS color, CMYK + 2 PMS colors
Finishing Gloss Lamination, Matte Lamination, Gloss AQ, Gloss UV
Included Options Die Cutting, Gluing, Scored, Perforation
Additional Options  Custom Die, Custom Window, Gold Foiling, Silver Foiling, Embossing, Spot UV and Debossing
Proof Flat View, 3D Mock-up, Physical Sampling (On request)
Turnaround 4 – 8 Business Days, RUSH
Shipping FLAT

1. What are custom mailer boxes used for?
Custom mailer boxes are commonly used for shipping products such as gift sets, subscription boxes, clothing, cosmetics, and promotional items. Their sturdy build and branded design make them ideal for both protection and presentation.

2. Can I print my logo and design on the mailer boxes?
Yes, Packaging Bull offers full customisation options. You can print your brand logo, tagline, colours, and even custom artwork both inside and outside the box to create a strong and memorable brand identity.

3. Are your mailer boxes eco-friendly?
Absolutely. Our mailer boxes are made using recyclable and biodegradable materials, making them an environmentally responsible packaging solution without compromising on quality or durability.

4. What sizes are available for custom mailer boxes?
We provide a wide range of standard and bespoke sizes to suit your specific product requirements. Whether you need a compact mailer for small items or a larger box for gift bundles, we can customise the dimensions accordingly.

5. Are mailer boxes strong enough for shipping?
Yes, our mailer boxes are made from high-quality corrugated cardboard, designed to withstand the rigours of shipping. They offer excellent protection against crushing, bending, and environmental factors during transit.

6. What is the minimum order quantity (MOQ)?
Packaging Bull offers low MOQs, making it easier for startups and small businesses to order custom mailer boxes without high upfront costs. Please contact us directly for specific quantity options and quotes.

7. Can I see a sample before placing a bulk order?
Yes, we provide sample kits to help you evaluate the size, quality, and print finish before confirming a large order. This ensures complete satisfaction with your packaging choice.

8. How long does it take to receive my custom mailer boxes?
Lead times may vary depending on order size and design complexity. Typically, production and delivery within the UK takes around 7–10 working days after final approval of the design.

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