Mailers Guide
Mailers
Choose the right mailer by item, weight, and protection level
Mailers are usually cheaper to ship than boxes because they reduce dimensional weight and pack denser per pallet. The right format depends on whether the item is flat or three-dimensional, soft or fragile, and how much protection it needs in transit.
Use this guide to route between poly mailers, bubble mailers, rigid mailers, and mailer boxes by use case.
Catalogs, booklets and flat document packs
Choose a mailer for the finished document packet
Use a corrugated mailer when a document packet needs more structure than flexible film. ML1292R is a 12 × 9 × 2 in fold-and-tuck literature mailer. M1181 is a smaller 11 1/8 × 8 5/8 × 1 in easy-fold mailer that seals with tape. Both come 50 per bundle.
Choose ML1292R for more room
Its listed inside size is 12 × 9 × 2 in, with a self-locking tab closure.
Before choosing: Extra room can allow movement. Check whether your packet needs an insert or cushioning.Choose M1181 for a smaller pack
Its easy-fold construction is scored at multiple depths and seals with tape. Listed inside size is 11 1/8 × 8 5/8 × 1 in.
Before choosing: Check covers and binding carefully; a document size alone does not establish fit.Choose by construction
Both list white ECT-32-B corrugated material and 50 units per bundle.
Before choosing: They have different dimensions and closing methods; they are not interchangeable sizes.Compare the exact products
Scroll the table sideways to see each product action.
| Listed size and type | Material and closure | Purchase quantity and use | Product and delivery |
|---|---|---|---|
| 12 × 9 × 2 in insideLiterature mailerSKU ML1292R | White ECT-32-B corrugatedSelf-locking tab; fold-and-tuck | 50 mailers per bundleLarger footprint and depth; tab closure. | View ML1292R and current price Use the ZIP estimator on the product page. Confirm the final total at checkout. |
| 11 1/8 × 8 5/8 × 1 in insideEasy-fold mailerSKU M1181 | White ECT-32-B corrugatedFold at the scored depth; seal with tape | 50 mailers per bundleSmaller footprint; easy-fold construction. | View M1181 and current price Use the ZIP estimator on the product page. Confirm the final total at checkout. |
Product details checked September 7, 2026. Price, availability and delivery depend on the exact product and order.
Which dimensions should I measure before ordering?
Measure the longest, widest and thickest parts of the complete packet, including its folder, cover, binding and protective material. Compare those measurements with the inside dimensions, then check the closure around the loaded packet.
Do the two mailers close the same way?
No. ML1292R has a self-locking tab, fold-and-tuck closure. M1181 folds around the product at the desired scored depth and seals with tape. Include that closing step in your packing workflow.
Does a corrugated mailer eliminate the need for cushioning?
No. The right protection depends on the packet, its finish and how it moves inside the mailer. Check whether corners, binding or included items need additional protection; listed board construction is not a damage-free guarantee.
How should I compare the order total?
Both options are sold 50 per bundle, so compare their current bundle prices alongside the dimensions and closing method. Open the exact SKU and use its ZIP estimator for a delivery estimate; confirm the final shipping, tax and total at checkout.
Buying for a repeat mailing run?
Include the selected SKU, number of bundles, delivery ZIP and timing in a bulk quote request.
Poly Mailers
Lightest option. Best for soft, non-fragile goods like apparel, textiles, accessories, and printed material. Tear-resistant, water-resistant, and dense to pack.
Bubble Mailers
Mid-protection option for items needing light cushioning: jewelry, small electronics, books, accessories, beauty samples, replacement parts.
Rigid & Mailer Boxes
For items that must stay flat (documents, photos) or need full six-sided protection (subscription boxes, branded ecommerce, fragile small goods).
Mailer FAQ
Poly mailer or bubble mailer?
Choose poly if the item is soft and unbreakable: apparel, fabric, soft accessories. Choose bubble if there is any risk of crushing, denting, or surface scratching.
Bubble mailer or small box?
Use a bubble mailer when the item is under about a pound, fits in a flat envelope shape, and only needs light cushioning. Use a small box when the item is rigid, fragile, or needs void fill.
Will mailers save me on shipping?
Usually yes. Mailers reduce dimensional weight and pack tighter, which lowers cost on services priced by DIM weight. Use the DIM Weight Calculator to compare.
Sizing tools & selectors
Pick the right format and size before you order.
Compare mailer types
Side-by-side guides on the most common mailer trade-offs.