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Custom Fragile Mailer Boxes for Glass and Ceramics

from £0.25 a boxPriced per job · low minimums

Custom fragile mailer boxes are printed mailers built for breakable things: heavier corrugated board, fitted inserts that hold each piece away from the walls, and clear fragile markings so couriers know what they are carrying. They are the box of choice for potters, glassmakers and homeware brands posting directly to customers.

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  • Design proofFree, approved by you before printing
  • PriceCustom quote by email within one working day
  • Production4–7 working days after proof approval
  • DeliveryFree and tracked, UK mainland, 2–3 working days
  • Misprints or damageReported within 10 days, reprinted or refunded

Where Breakages Really Happen

Most breakages are not caused by one dramatic drop. They come from small, repeated knocks: a parcel sliding along a conveyor, a box landing on its corner in a van, another parcel stacked on top. Each knock passes through the box wall into whatever is touching it. If a mug is pressed against the side of the carton, the shock reaches the mug directly. If it is held in the middle by an insert, with space between it and the wall, the shock is absorbed before it arrives.

That is the principle behind a fragile mailer: strong outer walls, plus an inner structure that keeps the item suspended away from those walls and stops it moving. Get both right, and most everyday parcel handling becomes survivable for glass and ceramics.

It also pays to think about the full journey. A parcel posted from a rural studio may pass through several depots and vans before it reaches a city flat, and each transfer is another chance for a knock. The more handling points there are, the more the box and insert need to do, which is why sellers who post nationally usually step up to stronger board than those delivering locally. Light items that are not breakable travel in our small mailing boxes for light items.

Stronger Board for the Outer Box

A standard mailer for clothing or cosmetics usually uses thin E-flute board. Fragile mailers step up to B-flute, which has taller flutes and more crush resistance, or to double-wall board for heavier or more valuable pieces. The extra thickness spreads knocks across a wider area and resists corners being pushed in when parcels are stacked.

The mailer style itself helps too. Roll end tuck front mailers have double-thickness side walls that fold over and lock, which adds stiffness exactly where boxes take the most impacts. For tall items such as vases, a crash lock base that locks firmly on assembly gives a more stable footing than flaps alone.

Size the outer box with a small gap all round the insert rather than a tight fit. That gap, even just a few millimetres, gives the walls room to flex on impact without passing the force straight into the item. A box that is too tight around its contents can be as risky as one that is too loose. Stoneware and sets of glasses move to our double wall boxes for heavier pieces.

Fragile Mailer Boxes, photo 2

Often ordered by

  • Studio potters and ceramicists
  • Glassmakers
  • Homeware brands
  • Candle makers using glass jars
  • Craft marketplace sellers
  • Drinks brands posting bottles

Fragile Mailer Boxes Specification

StyleRoll end tuck front mailer, Crash lock base mailer, Double-wall mailer, Mailer with tear strip
MaterialB-flute corrugated, Double-wall corrugated, E-flute for lighter items, Kraft or white liners
PrintFragile and this-way-up marks, One or two colour flexo, Full colour CMYK, Inside lid print
FinishUncoated kraft, Matt varnish, Gloss varnish
ExtrasCorrugated cradles and dividers, Foam inserts, Moulded pulp inserts, Printed tissue, Care cards
SizeMade to your size in mm
Minimum orderLow, quoted per job
PriceFrom £0.25 a box; custom quote by email within one working day
ProofFree design proof before printing
Production4–7 working days after proof approval
DeliveryFree tracked UK mainland delivery, 2–3 working days

Inserts That Hold Fragile Pieces

The insert is the most important part of a fragile mailer. A die cut corrugated insert can form a cradle that holds a mug by its body and handle, a set of compartments that separate glasses, or a raised platform that keeps a bowl clear of the base. Foam inserts cut to the outline of the item grip delicate shapes such as stemware or figurines. Moulded pulp is another option for larger runs of a single product.

Inserts also speed up packing. Wrapping each mug in layers of bubble wrap and filling gaps with paper takes time and varies from person to person. A cradle insert that the mug simply drops into is quicker, uses no loose fill and gives the same protection every time, whoever is packing. For sellers posting dozens of fragile orders a week, that consistency is often the biggest benefit.

  • Corrugated cradles for mugs, cups and jugs
  • Divided compartments for sets of glasses
  • Suspension platforms for plates and bowls
  • Foam cut-outs for stemware and figurines
  • Corner and edge supports for framed pieces
  • Separate compartments for lids and stoppers

Measuring Handmade and Irregular Items

Handmade work is rarely identical piece to piece. Two mugs from the same batch can differ by a few millimetres in height or handle shape. For that reason, we size inserts to the largest piece in a range, and use cradles that hold the item firmly but forgive small variations. If you send us two or three samples that span the range, we design around the biggest and check the smallest still sits securely.

Measure the overall height, the widest diameter including handles or spouts, and anything that sticks out. Lids, stoppers and separate parts should travel in their own compartment rather than sitting on the main piece, as that is where chips often happen.

Weigh a packed sample too, so we can match board grade to the real load. Our method for measuring irregular handmade items explains how to allow for variation.

Fragile Markings That Look Good

Printing fragile and this-way-up markings directly on the box is more reliable than stickers, which can be missed or peel off. We can design the markings into your branding, using your colours and type, so the box still looks like yours rather than a generic warehouse carton. Placing marks on at least two sides and the top makes sure they are visible however the parcel is stacked.

Couriers do not promise special handling just because a box says fragile, so the markings are a helpful nudge rather than protection on their own. The real protection comes from the board and insert, which is why we design those first. Markings in your own colours are also available as fragile stickers in brand colours for plain boxes.

A Better Unboxing for Breakable Goods

Customers buying ceramics and glass are often buying something special, so the unboxing matters. Printing the inside lid with a thank you, a care note or a short story about how the piece was made turns a protective box into a presentation. A layer of printed tissue over the insert adds a final reveal.

Clear packing makes returns easier too. If an insert is simple to use, customers can repack an item for return or exchange in the same box, which reduces damage on the way back.

A small printed card explaining how to lift the piece out of the insert also prevents accidental drops at the very last moment. Many studios wrap each piece in our branded tissue paper for wrapping before it goes in the insert.

Drop a Packed Sample From Waist Height

The honest test of a fragile mailer is a drop. Before you commit to a run, pack a sample box with a real item and drop it from waist height onto a hard floor, corner first, then open it; if the piece survived, the insert and the board are right, and if not, the test tells us exactly what to change. To get to that sample, send the item dimensions and weight, and if the pieces are handmade and vary, send three of them so the insert is cut to the largest. Choose the board by weight, single wall for mugs and small glass, double wall for stoneware and sets. Decide how the fragile marking should look, printed in your brand colours or as a plain warning. Artwork is a logo and the markings, sent as vector files, and the free proof shows the box and the insert together. A custom quote comes by email within one working day with minimums quoted per job. Production takes 4–7 working days after approval with free tracked UK mainland delivery. Boxes with the holder built into the base are our mailer boxes with built-in inserts.

Design Your Fragile Mailer Box

Choose the fragile mailer boxes photo closest to what you have in mind, add your logo, drag it into place and set the size. Send it with your sizes and we reply with a custom quote and a free design proof.

Fragile Mailer Boxes
Fragile Mailer Boxes

Drag the logo, or select it and use the arrow keys (Shift moves faster, + and − resize).

Price This Box

Selected: Fragile Mailer Boxes

Your logo and the photo are sent with the request. Custom quote by email within one working day.

Fragile Mailer Boxes Questions

What buyers ask before ordering fragile mailer boxes.

What board should I use for posting mugs?

B-flute corrugated with a fitted cradle insert suits most mugs. For heavier stoneware or sets, double-wall board adds extra strength.

How do you handle handmade pieces that vary in size?

We size inserts to the largest piece and design cradles that hold smaller ones securely. Sending two or three samples helps.

Should lids travel separately?

Yes. Lids and stoppers should sit in their own compartment so they do not rattle against the main piece.

Do fragile markings stop couriers dropping parcels?

No marking promises careful handling. Markings help, but the board and insert do the protecting.

Can fragile markings match my brand?

Yes. We design fragile and this-way-up marks in your colours and fonts so the box still looks branded.

Is foam or corrugated better for stemware?

Foam cut-outs grip delicate stems well. Corrugated compartments work for sturdier tumblers.

Can customers repack a fragile item in the mailer for a return?

Yes, a simple insert that the item lifts out of and drops back into makes repacking easy, which reduces damage on the way back. Print a short line inside the lid asking customers to reuse the insert. A second adhesive strip on the lid helps with resealing.

Can I post candle jars in these mailers?

Yes. Glass candle jars travel well in a mailer with a fitted cradle or divider.

Will a heavier box cost more to post?

Stronger board adds some weight. We balance strength and weight so you are not paying for protection you do not need.

How soon can fragile mailers reach my studio?

Production takes 4–7 working days after proof approval, then free tracked UK mainland delivery takes 2–3 working days. A first order with a sample box adds a few days at the start. Reorders use the same insert drawing.

What if the inserts do not fit my pieces?

If the inserts do not match the approved proof, report it within 10 days of delivery with a photo and we reprint or refund them. If the pieces have changed since the proof, a new insert can be cut without changing the box. Sending us real pieces before the proof avoids this.

Get a Price for Your Fragile Mailer Boxes

Fill in as much as you know. Sizes are in mm (internal sizes for boxes). If you have artwork, attach it; if not, a logo is enough to start the proof.

We reply with a custom quote by email within one working day, then send a free design proof before anything is printed.

Custom quote by email within one working day. Free design proof before printing.