One Piece Mailers makes it simple for businesses to design and order custom boxes and affordable packaging online. Get quality custom mailer boxes, shipping boxes and more for any need you might have. With quick turnaround and low minimums, we’re a leading wholesale box manufacturer for a reason. We think outside the box and build packages so good, you won’t be able to contain yourself (pun intended). We offer free die and plates, custom design, a variety of sizes, and fast turnarounds for all of our clients.

Dimensions All Custom Sizes & Shapes
Printing CMYK, PMS, No Printing
Paper Stock 10pt to 28pt (60lb to 400lb) Eco-Friendly Kraft, E-flute Corrugated, Bux Board, Cardstock
Quantities 100 – 500,000
Coating Gloss, Matte, Spot UV
Default Process Die Cutting, Gluing, Scoring, Perforation
Options Custom Window Cut Out, Gold/Silver Foiling, Embossing, Raised Ink, PVC Sheet.
Proof Flat View, 3D Mock-up, Physical Sampling (On request)
Turn Around Time 4-6 Business Days, Rush



One-Piece Mailers

Carefully designed Postcards and One Piece Mailers are a quick and efficient method of getting your message to the right individual. Clever use of variables enhances impact and using targeted data enables you to closely monitor response rates. Prices start from 30p for A6 cards, printed in color both sides, addressed and posted. Minimum quantities do apply.


1 – Quick production time – When you need to reach customers quickly, postcard mailers are a great method as postcards are quick to design, print and mail.

2 – Straight to the point – Postcard Mailers get your message across quickly so customers will engage quicker. With a more read-heavy mail product, busy people may not engage as much.

3 – Fantastic reminders – You probably wouldn’t want to send valuable information via postcards, however, cards are a great way to send a reminder. If it’s for a reminder of an event you’re planning or a part of a bigger mailing you sent.

For individual package prices please call us on (+1) 618 732 1855 or email

A variable message can also be included:-

Buy One, Get One Free
Try-Before-You-Buy (30-day trial, first month free, seminar, etc.)
Provide a Premium
A prize awarded for a particular act
Something offered for free
Be the first! (First 50, 100, or so on)
Free Sample (Demo your product/service)
Price Discount
Complete a Survey
Information/Education (white paper, article, etc.)
Consultation (free estimate, assessment, etc.)


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