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Custom Envelopes
Create custom envelopes for business correspondence, invitations, documents and lightweight products. Choose from printed business envelopes, padded mailers, rigid cardboard envelopes, window formats and…
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Custom Envelopes UK
Make every letter, document, invitation or postal order feel connected to your brand with custom envelopes from All Custom Packaging. We produce printed and personalised envelopes for UK businesses, retailers, event planners, charities and online sellers.
Choose a standard UK envelope format or request dimensions made around the item you need to send. Your envelopes can be printed on the front and back with logos, return addresses, brand colours, patterns and campaign artwork.
Orders start from 100 units per design, making it easier to create professional envelopes for routine correspondence, product launches, events and smaller direct-mail campaigns.
Custom Envelopes by Style
The right envelope depends on what you are sending and how much protection it requires. Our range covers everyday business communication, premium correspondence and postal packaging for small products.
Printed Business Envelopes
Custom business envelopes provide a professional way to send letters, quotations, contracts, invoices and marketing material.
Your logo, company details and return address can be printed directly onto the envelope to maintain consistent branding across your stationery.
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Business envelopes can be produced in popular formats such as DL, C5 and C4, as well as bespoke dimensions for non-standard inserts.
Padded Envelopes
Padded envelopes include an internal cushioning layer that helps protect small or lightweight products during postage.
They are suitable for sending:
- Books and media
- Jewellery and accessories
- Small beauty products
- Replacement parts
- Samples and promotional items
- Compact e-commerce orders
Explore Padded Envelopes and Small Padded Envelope options for items that need more protection than a standard paper envelope can provide.
Personalised Cardboard Envelopes
Cardboard envelopes use a firmer board construction to help keep flat items from bending during handling and delivery.
They are a practical choice for:
- Certificates
- Photographs
- Artwork and prints
- Calendars
- Documents
- Catalogues and brochures
- Flat retail products
Our Personalised Cardboard Envelopes can be printed with your branding while providing a more rigid mailing format.
Window Envelopes
Window envelopes include a transparent panel that allows an address printed on the enclosed document to remain visible.
They are commonly used for:
- Invoices
- Statements
- Account letters
- Customer notices
- Payroll documents
- Administrative correspondence
Explore 9×12 Window Envelopes for larger documents or request another size and window position to suit your mailing layout.
Invitation and Occasion Envelopes
Personalised occasion envelopes help create a coordinated presentation for invitations, greeting cards and announcements.
Choose paper colours and dimensions that complement the enclosed card, with optional foil details or full-colour printing for a more distinctive finish.
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These formats can be used for weddings, birthdays, corporate invitations, thank-you cards and seasonal correspondence.
Paper Envelope Sleeves
A Paper Envelope Sleeve is an open-ended format designed to hold and present flat items without using a traditional envelope flap.
Paper sleeves are suitable for:
- Gift vouchers
- Membership cards
- Hotel key cards
- Event tickets
- Promotional cards
- Product information
- Small stationery sets
The sleeve can be closely sized around the insert and printed with a simple logo or a complete full-colour design.
UK Envelope Sizes
Choosing the correct dimensions helps keep the contents neatly positioned and avoids unnecessary folds or empty space.
| Format | Size | Common Use |
|---|---|---|
| DL | 110 × 220 mm | A4 sheets folded into thirds and standard business letters |
| C5 | 162 × 229 mm | A4 folded in half or A5 sheets sent flat |
| C4 | 229 × 324 mm | A4 documents, certificates and reports sent unfolded |
| 5 × 7-inch format | Approx. 133 × 184 mm | Greeting cards, wedding stationery and invitations |
| Custom | Made to order | Unusual cards, documents, products or branded inserts |
When a standard size does not provide the right fit, share the dimensions of the item going inside. We can develop a bespoke envelope around the insert instead of forcing it into an unsuitable standard format.
Choosing the Right Envelope
Before selecting an envelope, consider the dimensions, thickness and fragility of the contents.
A paper business envelope may be sufficient for letters and invoices, while a board-backed format is more appropriate for prints or documents that should remain flat. Products that may be affected by knocks or pressure during postage can benefit from padded protection.
The envelope should provide enough space for easy packing without allowing the contents to move excessively. For bulky or heavy orders, consider stepping up to Custom Mailer Boxes or Poly Mailers.
Custom Printing and Brand Colours
Envelopes can be printed in full CMYK colour or matched closely to supplied Pantone references. Printing can be applied to the front, back and suitable internal areas, depending on the material and envelope construction.
Artwork can include:
- Company logos
- Return addresses
- Contact information
- Marketing messages
- Patterns and illustrations
- Social media details
- QR codes
- Campaign artwork
- Event names and dates
- Postal and handling instructions
Consistent printing across envelopes, letterheads and other stationery helps create a more professional brand presentation.
Printing and Finishing Options
The finish should support the purpose of the envelope and the style of your brand.
Full-Colour Printing Suitable for logos, illustrations, campaign artwork and designs that use several colours.
Pantone Colour Matching Helps maintain closer consistency with established brand colour references.
White Ink Printing Provides contrast on dark, kraft or coloured paper stocks where standard inks may not remain clearly visible.
Inside-Tint Printing Adds a pattern or colour to the interior. It can improve privacy for business correspondence or create a branded detail when the envelope is opened.
Foil Stamping Gold, silver, rose gold and other metallic foils can highlight logos, names or borders on premium correspondence and invitations.
Embossing or Debossing Adds a raised or pressed texture to selected logos, monograms or design elements.
Our team can recommend suitable printing methods based on the envelope material, colour and intended use.
Materials and Closure Options
Custom envelopes can be produced using different paper and board options depending on the required appearance and strength.
Available choices can include:
- White paper
- Coloured paper
- Natural kraft stock
- Textured papers
- Rigid cardboard
- Cushioned padded materials
Closure options may include traditional gummed flaps, peel-and-seal strips or other formats suited to the selected envelope style.
For business mailing, closures should support quick packing and secure handling. For invitations and presentation envelopes, the closure can be selected mainly for appearance and opening experience.
Custom Envelopes for Different Uses
Our envelopes can be developed for a wide range of business and personal applications, including:
- Corporate stationery
- Direct-mail campaigns
- Financial and legal correspondence
- Charity and fundraising mail
- Church offering envelopes
- Wedding stationery
- Event invitations
- Gift cards and vouchers
- E-commerce orders
- Promotional product samples
Each format can be adjusted according to the insert, mailing purpose and visual identity of the sender.
Free Design Support and 3D Mockup
Send us your artwork, insert dimensions and preferred envelope style, and our team will help prepare the design for production.
Free design support is available for positioning logos, addresses and other printed elements correctly. You will also receive a free 3D mockup to review the layout and overall appearance before placing the order.
Order Custom Printed Envelopes in the UK
All Custom Packaging produces branded envelopes in standard and bespoke sizes for correspondence, occasions and lightweight postal orders.
Choose from business, padded, cardboard, window, invitation and sleeve formats, with custom materials, printing and finishing options available.
Share the following details to receive a quotation:
- Required envelope style
- Insert dimensions
- Quantity
- Preferred material and colour
- Artwork or logo
- Printing and finishing requirements
Completed orders include free delivery throughout the United Kingdom.
✦ Finishing Options
Finishing & Material Options
Choose from premium coating, board, printing and finishing options for your insert boxes.
Varnish
A transparent finishing layer available in gloss, satin, or matte effects. It enhances the printed surface and adds an extra layer of visual appeal and light protection.
Spot UV
A UV-cured coating applied to specific areas of the design to create gloss or matte contrast and draw attention to important details.
Soft Touch Coating
A smooth, velvety coating that creates a soft tactile feel and gives packaging a refined luxury look. It improves the unboxing experience and supports a high-end product presentation.
Silk Lamination
A soft, smooth lamination with a refined satin-like finish. It gives packaging a premium feel while keeping the surface elegant, subtle, and easy to handle.
Spot Gloss UV
A high-gloss UV coating applied only to selected design areas to create sharp contrast, highlight logos, and add a premium visual effect without coating the whole surface.
Aqueous Coating
A clear, fast-drying water-based coating that adds a smooth protective layer while maintaining a clean and professional surface finish. It is a practical choice for everyday printed packaging.
Anti-Scratch
A durable protective film that helps reduce visible scratches, scuffs, fingerprints, and daily handling marks. It keeps packaging looking clean, polished, and premium for longer.
White Kraft Paper
A bleached kraft paperboard made from a mix of virgin and recycled pulp, offering a clean white surface for crisp and polished packaging designs.
Uncoated Unbleached Kraft
A natural kraft paperboard without coating, made from virgin and recycled pulp. It provides a raw, organic appearance with sturdy packaging strength.
SBS C2S Paper
A premium bleached paperboard coated on both sides, designed for excellent print quality, die-cutting, and professional packaging results.
SBS C1S Paper
A high-quality bleached paperboard coated on one side. It provides a clean printable face with a premium packaging feel.
Printing Paper
A smooth printable paper stock that supports high-resolution graphics, clean text, and rich color output for refined packaging presentation.
Natural Brown Kraft Paper
A natural kraft paperboard made from strong virgin and recycled pulp. It provides an organic, earthy look for sustainable and simple packaging.
Metallic Paper
A specialty paperboard with a laminated metallic surface available in gold, silver, and other premium finishes for luxury visual impact.
Holographic Paper
A specialty paperboard with a laminated holographic surface that creates a reflective, rainbow-like appearance for eye-catching product packaging.
Fully Recycled CCNB Paper
A recycled duplex paperboard with a white printable surface. It is ideal for economical packaging that still requires clean graphics and brand presentation.
Clay-Coated Kraft Back
A kraft board with a smooth clay-coated white face for quality printing and a natural kraft reverse side for a strong, authentic appearance.
Clay Natural Kraft
A kraft paperboard with a clay-coated printable top surface and a natural unbleached kraft back. It balances clean branding with a rustic natural look.
CCNB Paper
A duplex paperboard made with recycled pulp and a coated white printable surface. It delivers smooth print results for affordable carton packaging.
Black Kraft Paper
A black-dyed kraft board with a natural paper texture and excellent strength. It creates a bold, premium look for luxury and specialty packaging.
Window Patching
A packaging technique where a die-cut opening is covered with a transparent film, allowing the product inside to remain visible while staying protected.
Registered Embossing
An embossing technique where the raised design is precisely aligned with printed artwork to improve detail, texture, and overall presentation.
Hot Foil Stamping
A finishing process in which heat and pressure transfer metallic foil to the surface, creating a premium, shiny, and luxurious effect.
Combination Embossing
A premium finishing method that combines embossing with foil stamping to create a raised design with metallic color and strong visual impact.
Cold Foil Stamping
A decorative process that transfers foil onto selected areas of the surface using UV-curable adhesive, creating a bright metallic effect with sharp detail.
Blind Embossing
A technique that raises a design from the surface without ink or foil, giving packaging a clean, elegant, and textured appearance.
Blind Debossing
A finishing technique that presses a design into the material to create a recessed impression without using ink or foil. It adds subtle depth and a refined tactile effect.
UV Printing
A fast-curing printing process that uses ultraviolet light to dry ink instantly, delivering sharp detail, vibrant colors, and a premium finish.
Screen Printing
A durable printing method that uses a mesh screen and stencil to apply ink to surfaces. It is ideal for bold colors and high-impact packaging designs.
Offset Printing
A traditional high-quality printing process that transfers designs from plates to a rubber blanket before printing, making it ideal for large-volume production.
Digital Printing
A modern printing method that does not require printing plates, making it cost-effective and efficient for short runs, sample production, and small-batch quantities.
Triple Wall Flute
Built with three corrugated layers between four linerboard sheets, providing heavy-duty strength for large or industrial packaging needs.
Single Wall Flute
A standard corrugated structure with one fluted medium and two linerboards, providing dependable strength for everyday packaging.
Single Flute
A corrugated sheet with one flute layer between two liners, offering lightweight strength for protective packaging.
F-Flute
An ultra-thin flute grade designed for lightweight packaging, small retail boxes, and high-quality printed presentation.
E-Flute
A slim flute grade with a flatter surface, ideal for detailed printing, display packaging, and premium retail boxes.
Double Wall Flute
Made with two layers of corrugated medium between linerboard sheets, offering added strength and durability for heavier products.
C-Flute
A versatile corrugated flute that offers balanced compression strength, cushioning, and printability for many packaging applications.
B-Flute
A thinner flute grade with a smooth surface, making it suitable for high-quality printing, precise die-cutting, and neat retail packaging.
A-Flute
A thick corrugated flute profile that provides excellent cushioning, compression strength, and stacking support for protective packaging.
Oyster White Board
A coated linerboard with an off-white surface, suitable for high-quality printing and a refined packaging appearance.
Natural Kraft Board
An unbleached kraft linerboard made from recycled paper pulp, offering a natural look with strong durability for eco-conscious packaging.
Kemi White Board
A coated semi-gloss linerboard with a smooth white surface, ideal for sharp printing, premium presentation, and retail-ready packaging.
Bleached White Board
A fully bleached corrugated board with a bright white surface, designed to produce clean, vibrant, and high-quality printed packaging.
UV Ink
A UV-cured ink that dries instantly under ultraviolet light and creates crisp, high-quality print results on a wide range of packaging materials.
Soy Ink
A plant-based ink made with soybean oil, offering rich color output and a more sustainable printing option for carton packaging.
Pantone
A standardized color-matching system used to achieve consistent, accurate brand colors across packaging, labels, and printed materials.
CMYK
A full-color printing process using cyan, magenta, yellow, and black inks to create vibrant images, gradients, and detailed packaging artwork.