Best Envelopes of 2025

The SmithPackaging Wallet Envelopes are plain white DL (110 x 220 mm) envelopes, perfect for your everyday office posting needs. With a convenient pack of 25, you can easily manage your mailing tasks. The envelopes feature an opaque blue interior for enhanced security, ensuring that your documents remain private. Additionally, the self-seal closure makes sealing your items quick and hassle-free, saving you time during busy workdays. Made from PEFC certified paper, these envelopes are also a sustainable choice.

The Blake Self Seal Envelopes are an excellent choice for anyone needing to send invoices, letters, or brochures securely. Their blue opaque printed interior ensures extra security and confidentiality, giving you peace of mind that your important documents remain private. The easy-to-use self-seal closure saves you time and effort, making the process more convenient. With a pack of 1000, you'll have plenty of envelopes on hand for all your mailing needs.

The Blake Self Seal Envelopes are perfect for your everyday office mailings. With their self-seal feature, you can save time and effort, ensuring your documents are securely enclosed without the need for additional adhesives. The security opaque design keeps your contents private, providing peace of mind when sending sensitive information. Additionally, these envelopes come in a convenient pack of 100, allowing you to handle large volumes of mail easily. Their versatile size of 110 x 220 mm makes them suitable for a variety of documents.

The Evour Self-Seal Envelopes are designed for ease and efficiency in your mailing tasks. With a strong self-seal adhesive, you simply fold and press the flap to seal, eliminating the need for glue or licking. The no-window design makes it easy for you to print or write addresses without obstruction. Additionally, these envelopes are compatible with most printers, allowing for hassle-free mass mailings. Their versatile size and construction make them ideal for sending invoices, letters, and brochures, making your everyday mailing activities much simpler.

The Postmaster DL Envelopes are designed to securely hold A4 sheets folded into thirds, making them ideal for mailing documents. With their opaque blue interior, you can ensure your sensitive information remains private. The self-seal feature allows for quick and hygienic closure, eliminating the need for licking. Additionally, these envelopes are PEFC-certified, meaning they come from sustainably managed forests, providing peace of mind for environmentally conscious users.

The Postmaster Envelopes offer a convenient peel and seal feature, ensuring that your envelopes remain sticky and hygienic. Made from 100 GSM paper, these envelopes provide enhanced protection for your letters, keeping them safe during transit. Manufactured in the UK, they also contribute to a lower carbon footprint. Additionally, the PEFC-certified paper promotes sustainability, allowing you to feel good about your purchase while supporting responsible forest management.

The Blake Envelopes Pack offers a secure peel and seal closure, ensuring ease of use and added security for your important documents. Made from high-quality 100 gsm paper, these envelopes are perfect for business correspondence, letters, brochures, and more. You will appreciate their suitability for printing, allowing for custom designs and branding. With this pack of 500, you'll have plenty of envelopes ready for any occasion, enhancing your organisational efficiency.

TRIPLE PRIO Peel and Seal Envelopes offer exceptional security with their tinted design, ensuring that your sensitive documents remain confidential. The quick peel and seal closure means you won't need any moisture, making mailing more efficient and hassle-free. With a windowless front, you can easily print, label, or hand-address your envelopes, saving you time during busy mailing tasks. Plus, the printer-friendly thick paper prevents jamming, allowing you to focus on your correspondence without interruptions.

The Tallon C5 Envelopes offer great convenience with their self-sealing feature. Once you peel off the strip, the envelopes seal securely, saving you time and effort. Made from 80gsm paper, they provide a sturdy and reliable option for your mailing needs. Additionally, the security printing ensures that contents remain private, as they are not see-through. This makes them ideal for sending sensitive documents with peace of mind.

The Uncle Paul Envelopes pack includes 45 white envelopes in various sizes, perfect for your mailing needs. With a self-seal adhesive strip, closing the envelopes is quick and convenient, ensuring that your contents are securely enclosed. The security tinted design protects sensitive information with a blue printed pattern inside. Each envelope is made from 100GSM paper, providing durability and a professional finish, making them ideal for both personal and commercial use.