Self-Seal Mailer Boxes — Custom & Printed Mailers by Winpack

Self-Seal Mailer Boxes by Winpack — Secure, Sustainable Packaging Solutions

Overview

Self-seal mailer boxes offer a fast, tamper-evident, and professional way to ship products. Designed for speed and convenience, our self-seal mailer boxes eliminate the need for tape or glue, improving packing efficiency and reducing labor costs while delivering a polished unboxing experience that boosts brand perception.

Key Features

Durability, ease of use, and custom branding are central to our design. Winpack's self-seal mailer boxes are available in multiple sizes and strengths, include tear strips for easy opening, and support full-color printing and spot finishes. Anti-counterfeiting inks and reinforced edges protect contents and enhance presentation.

Customization & Branding

Customize every detail — from dielines and substrate choice to CMYK or Pantone color matching. We offer custom printing, embossing, windowing, and matte or gloss finishes so your self-seal mailer boxes match Winpack voice. High-resolution printing on our Heidelberg and Lithrone GL-40A ensures vibrant, consistent results that stand out on arrival.

Materials & Sustainability

Choose recyclable kraft, SBS, or coated options that balance protection with environmental responsibility. Our production supports eco-friendly inks and materials, allowing you to market your products with sustainable credentials while maintaining the structural integrity required for safe shipping.

Industries & Applications

Ideal for cosmetics, food, healthcare, pharmaceuticals, and electronics, these mailers protect fragile items and reduce return rates. Whether you need subscription box fulfillment, direct-to-consumer shipping, or retail-ready packaging, our self-seal mailer boxes adapt to varied logistics and branding needs.

Why Winpack

Founded in 2016, Guangdong Winpack Printing Technology Development Co., Ltd. combines a 15,000 m² factory with advanced plate-making and printing technology, including Heidelberg presses and anti-counterfeiting inkjet printers. We offer end-to-end services — design, proofing, printing, and production — to deliver high-quality, custom self-seal mailer boxes on time and on budget. Visit https://www.winpackprinting.com/ to request a quote or samples.