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Postal Boxes

Shop our large range of postal boxes in sizes from small, medium, and large, with Royal Mail large letter boxes, book wrap mailers, and flower boxes available too.

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Small Postal BoxesSmall Postal Boxes
Medium Postal BoxesMedium Postal Boxes
Large Postal BoxesLarge Postal Boxes
Postal Boxes to fit A4Postal Boxes to fit A4
Postal Boxes to fit A5Postal Boxes to fit A5
Postal Boxes to fit A6Postal Boxes to fit A6
Flat Packed Postal BoxesFlat Packed Postal Boxes
Rigid Two-Piece Postal BoxesRigid Two-Piece Postal Boxes
Pizza Box Style Postal BoxesPizza Box Style Postal Boxes
Book Wrap MailersBook Wrap Mailers
Packing ItemsPacking Items
White Postal BoxesWhite Postal Boxes
Black Postal BoxesBlack Postal Boxes
Kraft Postal BoxesKraft Postal Boxes
Recycled Cardboard EnvelopesRecycled Cardboard Envelopes
Recycled Postal BagsRecycled Postal Bags
Flexi-Hex® Postal Sleeves Flexi-Hex® Postal Sleeves
Recycled Jiffy BagsRecycled Jiffy Bags
Subscription Postal BoxesSubscription Postal Boxes
Flower BoxesFlower Boxes
Paper Mailing BagsPaper Mailing Bags
Postal Boxes with Coloured LiningPostal Boxes with Coloured Lining
Royal Mail Large Letter BoxesRoyal Mail Large Letter Boxes

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  1. Flexi-Hex bottle box sealed packaging Flexi-Hex® Pinch Top Postal Box for Bottles and Diffusers
    DPD Approved Flexi-Hex® Pinch Top Postal Box for Bottles and Diffusers
    FHKR02 125 x 125 x 370mm
    From £1.01£0.84
    £1.21 £1.01
  2. Large Rigid 2 Piece Postal Box | Gift Box Kraft Brown Kraft Rigid 2-Piece Postal Box / Gift Box 207mm length
    Brand Online Brown Kraft Rigid 2-Piece Postal Box / Gift Box 207mm length
    OORMKR26 207 x 152 x 70mm
    From £2.02£1.68
    £2.39 £1.99
  3. White Rigid 2 Piece Postal Box / Gift Box White Rigid 2-Piece Postal Box / Gift Box 105mm length
    Brand meNo Insert White Rigid 2-Piece Postal Box / Gift Box 105mm length
    RMWH01 105 x 70 x 40mm
    £1.90 £1.58
  4. Bottle Packaging protective mailer Rollor™ Medium Kraft Protective Bottle Mailer
    Rollor™ Medium Kraft Protective Bottle Mailer
    BWRPKRME 433 x 147 x 135mm
    £5.54 £4.62
  5. Flexi-Hex Protector 100mm Flexi-Hex® Air Sleeve in Kraft - 100mm
    Brand me Flexi-Hex® Air Sleeve in Kraft - 100mm
    AIKR10 100 x 25 x 7mm
    From £0.50£0.42
    £0.64 £0.53
  6. Kraft Paper Tape with White Fragile Text 50 metres x 50mm Kraft Paper Tape with White Fragile Text 50 metres x 50mm
    Kraft Paper Tape with White Fragile Text 50 metres x 50mm
    TAPKRWF 50m x 50mm
    £7.91 £6.59
  7. Round Thank you Handmade Just for you Labels
    Thank You, Handmade Just For You Round Labels 44mm - Roll of 250
    LAWH44TY 44 x 44mm
    £14.24 £11.87
  8. Round Thank you Handmade Just for you Labels
    Just For You, Handmade With Care Round Labels 44mm - Roll of 250
    LAWH44CA 44 x 44mm
    £14.24 £11.87
  9. Supporting a Small Business Sticker Small Business Round Matt White Stickers 50mm - Roll of 10
    Small Business Round Matt White Stickers 50mm - Roll of 10
    LAWH50SB 50 x 50mm
    £0.66 £0.55
  10. Grey Foam Insert For A6 Boxes Grey Foam Insert For A6 Boxes
    Grey Foam Insert For A6 Boxes
    OOFOA6GR5 165 x 116 x 5mm
    £0.17 £0.14
  11. Black Foam insert 8mm thick Black Foam Insert For Matchbox Boxes
    Black Foam Insert For Matchbox Boxes
    OOFOMTSB5 68 x 68 x 5mm
    £0.16 £0.13
  12. Grey A6 Foam Grey Foam Insert For A6 Boxes
    Grey Foam Insert For A6 Boxes
    OOFOA6GR15 165 x 116 x 17mm
    £0.17 £0.14
  13. White Foam Insert For Choker Boxes White Foam Insert For Choker Boxes
    White Foam Insert For Choker Boxes
    OOFOCHWH18 160 x 160 x 18mm
    £0.20 £0.17
  14. Black and White Foam Insert For A5 Boxes Black and White Foam Insert For A5 Boxes
    Black and White Foam Insert For A5 Boxes
    OOFOA5BW5 230 x 165 x 5mm
    £0.20 £0.17
  15. Black Foam insert 8mm thick Black Foam Insert For A5 Boxes
    Black Foam Insert For A5 Boxes
    OOFOA5BL15 230 x 165 x 15mm
    £0.20 £0.17

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Shop our large range of postal boxes in sizes from small, medium, and large, with Royal Mail large letter boxes, book wrap mailers, and flower boxes available too.

Postal Boxes - Recyclable, Sustainable & Ready to Mail

At Tiny Box Company, we offer a wide range of postal boxes and mailing boxes for everything from personal parcels to high-volume business orders. Our collection includes flat pack and rigid styles in sizes including A6, A5, and A4 - including Royal Mail large letter boxes.

Made from eco-friendly materials like corrugated cardboard, our boxes are strong, secure, and sustainable - ideal for eco-conscious individuals and businesses alike. Use them to ship everything from photographs and stationery to artwork, gifts, or corporate brochures.

What's corrugated cardboard? Quite simply, it's made up of three layers of board - two sheets covering the outside and one in the middle that has a rippled shape. This is what makes it so strong, which is why it's often used for mailing!

Read more here on selecting the perfect material for your gift/postal boxes.

Brighten up your packaging with colourful A6 mailing boxes or go classic with kraft brown and white finishes. For delicate items like books or flowers, explore our kraft mailers and flower letterboxes with circular hole cutouts.

They’re not just for shipping - our boxes are also great for storage, gift presentation, or keeping handmade items protected. And when space is limited, our flat pack options fold down neatly. Need some help choosing the right postal box for your business? Check out our guide here!

Add your logo with digital printing to make a lasting impression. Whether you need a few or are ordering in wholesale quantities, we offer flexible options for every business size.

Finish the look with our eco-friendly postal bags, kraft tape, shredded paper filler, and more packaging accessories - all designed to keep your products safe and stylish.

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