usps poly mailers
Liam Parker
Updated on May 12, 2026
USPS does allow you to ship items using poly mailers as of 2022. Poly mailers are an alternative to standard packaging that are lightweight and sturdy plastic bags, perfect for shipping items like clothes.
How much does it cost to ship a poly bag USPS?
A Cost-Effective Shipping Option
For instance, poly mailers can be shipped via USPS First Class Mail, for lightweight packages (under 13 oz), starting at just $0.49.
Does USPS charge for poly mailers?
How much are poly mailers? Prices can vary from $0 (for some instances of free shipping supplies) to a few dollars per pack of 25. USPS poly mailers can ship for no additional cost if you have small shipments. If you’re a ShipBob customer, poly mailers are available at no extra cost for your shipments.
Does USPS have poly bags?
USPS Rules For Poly Mailers
They include: Poly mailers must be 2 mils thick for shipments up to 5lbs and 4 mils thick for shipments up to 10 lbs. Their overhang should not exceed 0.5″ when the package is laying flat. First Class Mail can only be used for any poly mailer weighing under 16 oz.
Does USPS have free poly mailers?
Does USPS have free poly mailers? Poly mailers are a great way to ship products like sweaters and clothing that don’t need bubble wrap and can bear top-loading. In general, the USPS does not offer poly mailers, although you can get padded flat rate envelopes that are plastic on the outside with Priority Mail.
Can I use my own poly mailer for priority mail?
Many people believe that Priority Mail Express, Priority Mail, First Class Mail, and other USPS programs require customers to use their packaging. However, unless you are shipping a package via Priority Mail Flat Rate, customers are welcome to use their own shipping mailer, including a poly mailer.
Can you put stamps on poly mailers?
If your bubble mailer is considered an envelope and weighs 1 ounce or less, you can slap a $0.55 forever stamp on your mailer and drop it off at your post office as usual. If your bubble mailer is considered a package, you’ll choose between USPS First Class, USPS Retail Ground, Priority Mail and Media Mail.
Can I reuse a poly mailer?
Poly mailers are the go-to packaging option for non-fragile goods. Because they can be recycled and reused means you can be cost-effective and environmentally conscious at the same time. Once you decide poly mailers are right for you and your business, there are many styles and sizes from which to choose.
Is it cheaper to mail a box or bag?
Boxes: Boxes are more expensive to purchase as well as to ship, but they are more durable than envelopes or padded mailers. Boxes are ideal for fragile items that require more protection than an envelope can provide, as well as shipments containing multiple items, or heavy or large items.
What is the cheapest way to ship through USPS?
First-Class Mail® is an affordable mail service for standard-sized, single-piece envelopes weighing up to 3.5 oz and large envelopes and small packages weighing up to 13 oz. Prices start at $0.58 at a Post Office.
Do poly mailers count as envelopes?
Poly mailers are frequently shipped with USPS First Class, Priority Mail, and Media Mail. The service used would be Package or Thick Envelope. These services are both, ultimately, “Package”. Thick envelope just refers to the thickness of the package containing the contents.
Can I use a bag to ship USPS?
Plastic bags must be at least 2 mil thick polyethylene or equivalent for easy loads up to 5 pounds; 4 mil thick for easy loads up to 10 pounds.
How is the cheapest way to send a package?
USPS will always be the cheapest way to ship compared to FedEx or UPS hands down. However as the weight creeps closer to 2 pounds, USPS shipping costs achieve pricing parity with UPS and FedEx Ground.
Why are USPS shipping supplies free?
To help business owners manage their shipping costs, the USPS provides free shipping boxes and envelopes for some of their popular service levels.
Does UPS offer free poly mailers?
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