Rigid Mailers 9×12

Two ways to keep things flat and protected

There is more than one way to build a rigid mailer. The right one depends on what you are sending. A classic stay-flat mailer uses a peel-and-seal strip. So it is quick to pack and cheap to ship. A rigid mailer box uses a proper lid instead, often with a magnet. So it opens and shuts like a small gift box. That is why magnetic closure boxes suit items with a bit more retail value, like a flat product or a premium card set.

Not sure which one fits your product? Tell us what you are shipping and we will point you to the right format.

Why brands choose us for rigid packaging

• Built to keep contents flat, so nothing bends or creases in transit.
• Available as a peel-and-seal mailer or a magnetic closure box.
• Printed edge to edge, so your branding travels with every shipment.
• Sized at 9×12 as standard, though we cut custom sizes too.
• Strong enough for photos, prints, documents and small flat products.
• Part of our wider custom made rigid packaging and custom product packaging boxes range.

Who uses rigid mailers

Photo prints and art shops

Photo prints and art prints cannot survive a folded envelope. So print shops rely on rigid mailers to ship them flat, every time. A 9×12 mailer covers most standard print and mat sizes with no extra padding needed.

Card makers and small publishers

Greeting cards, invitations and small booklets also need to arrive uncreased. So a rigid mailer protects the corners and the surface. That matters a lot when the product is the design itself.

Retail and gift brands

For a flat product with real retail value, a plain mailer can feel plain. That is why some brands step up to a rigid mailer box with a magnet instead. It opens with a bit of ceremony. So a phone case, a flat gift set or a small keepsake feels like more than just a shipment.

Businesses sending official paperwork

Contracts and certificates often need to arrive clean and flat. So a rigid mailer is the simple fix here. It keeps paperwork flat and safe, without needing a full box.

Board and finish

The board affects both strength and look. Here is how the main options compare.

White board works well when you want bold, colourful print. Kraft gives a warmer, more natural feel. Laminated board is the usual pick for a magnetic closure box. That soft-touch or gloss finish is what makes the lid feel premium when it opens.

Ordering and pricing

It is a short process. Send us your item size, the format you want, and your artwork. We send a proof, you approve it, and we print and ship. Here is the rest at a glance.

To get a price, email info@packprinters.com or Peter@packprinters.com with your item size, the format you prefer, your quantity, and your artwork. Pack Printers will come back with a quote fast, usually within a day or two.

Getting the fit right

One thing worth knowing: 9×12 is popular because it suits so many standard items. But it is not the only size we offer. So tell us exactly what you are shipping, including thickness. A stack of prints needs more depth than one single card. If you are between sizes, order a sample first. That way, you confirm the fit before a full print run.

A note on quality and recycling

Our rigid board meets standard packaging quality rules, and every order goes through a proof step before production. Rigid board is paper-based, so it recycles easily when clean. A laminated finish adds durability and a nicer feel, but it does make recycling a little harder. So if low waste matters to your brand, we will help you pick the cleanest build that still does the job.

Need rigid mailers that keep your product flat and protected, printed with your branding? Send us your item size, the format you want, your quantity and your artwork. We will come back with a proof and a quote.