Is a bubble mailer considered a flat

Bubble mailers are pretty much considered package rate. Doesn’t matter about weight, it’s size. I have companies that send them out by weight at like $2.50, but the bubbles make them thicker which raises the price to around $5.00.

Is a bubble mailer considered a flat. Nov 22, 2023 · Here are the sizes of bubble mailers available at USPS: ReadyPost Bubble Mailers Small – 12 x 8.5 inches, available in packs of 24 for $35.80. ReadyPost Bubble Mailers Medium – 16 x 10.5 inches, available in packs of 24 for $43.80. ReadyPost Bubble Mailers Large – 19 x 12.5 inches, available in packs of 36 for $79.00.

Uncategorized. To be classified and priced as a package (parcel), a mailpiece must be flat-size or larger, if rigid, or more than 3/4″ thick. When padded bags (e.g., ReadyPost® “cushion mailer”) have a thickness of 3/4″ or less and are flat-size and somewhat flexible, they should be classified and priced as a large envelope.

There are two dimensions to consider when selecting a bubble mailer. When you have an envelope lined with Bubble Wrap or a poly bubble mailer, the outside dimensions will differ from the interior …BUBBLE MAILERS . SELF SEAL BUBBLE BAGS; GLAMOUR BUBBLE MAILERS . ... this is a measurement of the outside of a flat mailer. However, this measurement does not reflect the usable dimensions within the mailer. ... Clothes are considered “non-fragile” items, so they don’t need all the bubble wrap and packing …The vague term "not too rigid" leaves it up to the judgement of whatever mail sorter that's handling your item when going through the system. I can see how one mail handler might see an envelope with a plastic top loader as too rigid and most would just send it through with no problem. Message 2 of 6. latest reply.How Many Stamps For A 6x9 Bubble Mailer: Discover the ideal number of stamps needed for a 6x9 bubble mailer. Get accurate postage information and avoid guesswork. Find out the right postage rate and never worry …A large, flat envelope no thicker than 3/4 inches. Note. ... a T-shirt or blouse), or a watch in its case. Most of these items can be shipped in a poly mailer, bubble mailer, or a small box. 1-2 lb: Heavier clothing items (for example, a jacket or dress pants), a cell phone in its box, sneakers, or light items that need to ship in a small box.Instances Where You Will Want to Use Bubble Mailers. Bubble mailers have an extremely durable exterior, and interior cushioning for packages. That makes this kind of mailer perfect for sending flat, solid items that need a bit of extra padding to survive the journey. A bubble mailer is great for use with books, CDs and DVDs, jewelry, small ...When it comes to finding the perfect pair of flat shoes, comfort, style, and durability are key factors to consider. Two popular brands that offer a wide range of flat shoes are Sk...

In the event that your envelope can be considered to be an envelope, and weighs less than 1 ounce then you can put an $0.55 permanently stamp to the mailer to drop off it at the post office the way you normally would. ... It is recommended to use bubble mailers for something that is flat, small, and doesn’t require an excessive amount of ...Shipping bubble mailers can be tricky especially if you don't get the service provider's flat-rate package. Their shipping cost would depend on the thickness of the bubble mailer. For your reference, padded mailers that are not more than 3/4 inch thick are considered an envelope.When it comes to towing a vehicle behind your motorhome, flat towable vehicles are an excellent choice. These vehicles allow you to easily transport your car without the need for a...Bubble mailers are a type of padded envelope reinforced with a layer of protective bubble wrap. They are commonly used for shipping and mailing items that require extra protection, such as electronics, fragile items, or important documents. Bubble mailers come in various sizes, colors, and materials to suit different needs.Uncategorized. To be classified and priced as a package (parcel), a mailpiece must be flat-size or larger, if rigid, or more than 3/4″ thick. When padded bags (e.g., ReadyPost® “cushion mailer”) have a thickness of 3/4″ or less and are flat-size and somewhat flexible, they should be classified and priced as a large envelope.Aug 14, 2023 · Significantly cheaper shipping costs. While corrugated boxes are sturdy, cheap, and resistant to damage, poly mailers provide protection while reducing shipping costs. Due to their light weight and small size, poly mailers cost less per shipments when compared to boxes. One major factor in the pricing of shipments is dimensional weight, a ...

Since one side of the bubble mailer is more than 6 1/8 inches long, it seems to me, that the USPS definition allows me to do this. ... metal, plastic, etc. -- it is a PARCEL, not a large envelope aka flat. A "large envelope" aka flat must be at least 6-1/8 inches WIDE (short dimension) OR at least 11.5 inches LONG (long dimension). Either one ...We would like to show you a description here but the site won’t allow us.What is the difference between a padded envelope and a bubble mailer? Padded envelopes are commonly produced with Kraft paper whereas bubble mailers are made with a polyethylene film making them resistant to moisture. Custom bubble mailers are also more flexible, making them a great option to handle shipping various shapes of objects. …Jeremy Grantham expects the historic bubble in stocks, bonds, and house prices to end with an epic crash and an economic catastrophe. Jump to Jeremy Grantham has warned the implosi... Flat Rate Packaging is available in many convenient sizes for Priority Mail Express and Priority Mail, and can be used for domestic and international mailings. Flat Rate shipping lets you send your items for a low Flat Rate price. See the Flat Rate Quick Reference section for additional details, including international weight restrictions

Battery saver active gmc.

I'm (USA) wanting to send my friend a necklace, so to protect it I want to put it in a bubble mailer. I'm shipping internationally so (I think) have to go in one of the flat-rate shipping envelopes to make it the lowest price since shipping label estimates all seem to be wildly more expensive.The cost of sending a bubble mailer via Priority Mail depends on the weight and the zone, ranging from $7.70 to $13.75. Priority Mail Flat Rate: This is a special service that allows you to send packages of any weight (up to 70 pounds) for a flat rate, as long as they fit in one of the USPS-provided boxes or envelopes.A 6×9 bubble mailer is considered a large envelope by USPS standards, as it exceeds one of the following dimensions: length greater than 11.5 inches, height greater than 6.125 inches, or thickness greater than 0.25 inches. ... For example, if you use a Priority Mail Flat Rate Envelope for your bubble mailer, you need to pay $8.25 in postage ...Bubble-Lined Poly Mailers. For fragile goods that don’t necessarily need a fully packaged box, bubble-lined poly mailers offer extra cushioning and added protection. They’re a low-cost way to send small, delicate items to customers and are usually self-sealable. ... Flat spots or gaps can be misread by scanning mechanisms that might lead …Medium Flat Rate Boxes. From $61.80 at Post Office. From $58.06 for Commercial Base. From $58.06 for Commercial Plus. Large Flat Rate Boxes. From $74.60 at Post Office. From $70.55 for Commercial Base. From $70.55 for Commercial Plus. First-Class Mail International ® Letters and postcards from $1.55 for all countries. Large Envelopes (flats ...

BUBBLE MAILERS . SELF SEAL BUBBLE BAGS; GLAMOUR BUBBLE MAILERS . ... this is a measurement of the outside of a flat mailer. ... Clothes are considered “non-fragile” items, so they don’t need all the bubble wrap and packing peanuts that something like glassware would require. Simply find a poly mailer slightly …Bubble Mailer Specifications and Features: –12-1/4" (L) x 17-3/4" (W) usable inside dimensions. –Bubble liner for added protection. –Lightweight to reduce postage. –Self–sealing fold–over flap. Get everything you need to ship packages at the Post Office™ with our ReadyPost® Shipping Supplies. Pack and protect your shipment with ...The Cost of Shipping a Bubble Mailer with USPS Depends on Size, Weight, and Distance. Unfortunately, there’s no way to say, “It costs ‘x’ amount of dollars to send a mailer with USPS.” The truth is, the cost of shipping a bubble mailer all depends on three factors: the weight of your mailer, the size of it, and the distance it needs ... Uncategorized. To be classified and priced as a package (parcel), a mailpiece must be flat-size or larger, if rigid, or more than 3/4″ thick. When padded bags (e.g., ReadyPost® “cushion mailer”) have a thickness of 3/4″ or less and are flat-size and somewhat flexible, they should be classified and priced as a large envelope. The most common way to recycle bubble roll is by dropping it off at a store with a soft plastics recycling bin. Be sure to remove all labels by cutting them out and disposing in the trash. Deliver the bubble wrap or bubble mailers along with other flexible plastics to a recycling drop-off site, which can be found at grocery stores and ...For instance, 4-6 medium shirts will easily fit into a 10" x 13" flat mailer, but only about 3-4 will fit into a padded mailer. Consequently, adjust the size of your mailer bag accordingly based on the type of padding you will use. If a small, fragile item requires cushioning, we recommend that you use a bubble mailer.Overview. Ensure your mailing is clean, dry, and protected with our white, cushioned, #2 poly bubble mailer. Designed for your convenience and peace of mind, this high-quality mailer is available in a pack of 25 units for Solutions for Small Business™ customers.When it comes to finding the perfect pair of flat shoes, comfort, style, and durability are key factors to consider. Two popular brands that offer a wide range of flat shoes are Sk...Bubble Mailers and Envelopes are Considered Packages When They’re 3/4 Inches Thick or More. USPS will only accept bubble mailers as packages if their total thickness is 3/4 of an inch or more. ... Is a padded envelope considered a flat? A mailpiece must be flat-size or larger, if rigid, or over 3/4″ thick to be classified and ...

Anything over 1/4” is considered a package. Those bubble mailers are considered soft and are unmachinable. New sorters will absolutely tear apart bubble mailers and cause all kinds of issues. Yeah it’s annoying but… thems the rules Reply reply ... It qualifies as a flat / large envelope. But the easier solution may be to change your ...

Overview. Ensure your mailing is clean, dry, and protected with our white, cushioned, #2 poly bubble mailer. Designed for your convenience and peace of mind, this high-quality mailer is available in a pack of 25 units for Solutions for Small Business™ customers.Some veteran tech watchers are making noises about a new bubble in the market. By clicking "TRY IT", I agree to receive newsletters and promotions from Money and its partners. I ag...Wholesale Shipping Supplies. We love poly mailers because they offer the most packaging options at a great wholesale price. If your eCommerce shipping strategy only allows only for a single shipping supply on hand, we suggest poly mailers over bubble mailers. The value of having the option to add or remove additional padding can’t be …For instance, 4-6 medium shirts will easily fit into a 10" x 13" flat mailer, but only about 3-4 will fit into a padded mailer. Consequently, adjust the size of your mailer bag accordingly based on the type of padding you will use. If a small, fragile item requires cushioning, we recommend that you use a bubble mailer.Bubble mailers can be considered packages or envelopes based on their thickness. If a bubble mailer is 3/4 inch thick or less, it is considered an envelope. If it is over 3/4 inch …A poly mailer is a shipping mailer that is designed to offer an affordable, reliable, and lightweight alternative to traditional cardboard boxes. Poly mailer envelopes are made out of lightweight plastic and are perfect for shipping clothes, electronics, and jewelry, among other things. In addition to being lightweight, poly mailer envelopes ...Jul 4, 2022 · The bubble mailer is perfect for sending small items, especially flat items, like brochures or flyers. 3. Use a large, flat envelope. This one definitely has the most benefits.Stamp a 5 x 7 envelope with your favorite design. Cover the stamp with clear archival glue (such as Mod Podge) and stamp it again to cover Are you an avid RV owner looking to enhance your travel experience? If so, you may want to consider investing in a flat towable vehicle. Flat towable vehicles, also known as dinghy...Determining the processing category of a mailpiece (letter, flat, or parcel) is dependent solely on the physical dimensions of the piece with­out regard to address placement. If an envelope exceeds any of the physical dimensions, or 3.5 ounc­es in weight, it is classified and priced as a large envelope (flat). Q.

Dr ziad allos.

Is midlothian tx safe.

Lightweight mailer bags that reduce shipping costs while retaining shipping strength. Made from either recycled material or renewable sources, some are reinforced with fiberglass for extra …Whatever you call them, flats must: Have one dimension that is greater than 6-1/8 inches high OR 11-½ inches long OR ¼ inch thick. Be no more than 12 inches high x 15 inches long x ¾ inch thick. * Large Envelopes exceed … Weight and Size: Winner: Poly Bubble Mailers. Poly bubble mailers are lighter and more compact than paper padded mailers. Comparing two of these mailers - an 8.5 x 10.75" bubble mailer and an 8.5 x 11" padded mailer: The bubble mailer weighs 0.8 oz and the padded mailer weighs 2.2 oz. A case of bubble mailers holds 100 units and weighs 5 lbs. Bubble mailers are available in a large array of sizes, but small bubble mailers usually top out around 6 by 10 inches with anything larger being considered a standard-size bubble mailer. Speciality mailers can be as small as 3 by 4 inches.Round-trip mailing of a disc is mailing, under specific criteria, from a mailer who expects to receive the disc back from a subscriber. Large Envelopes (Flats) that exceed 13 ounces are mailed at the Priority Mail® rate Size Requirements: Minimum Size: 6⅛ inches by 11½ inches. Maximum Size: 12 inches by 15 inches. Thickness: ¼ inch to ¾ inchThick Envelopes: Includes bubble mailers and other large, padded envelopes and has the same size restrictions as a flat. Since a thick envelope is under 1 cubic foot, you are not required to enter package dimensions. Packages: Includes anything up to 84" when measuring the distance of the longest side, plus twice the width and twice the height.Label Your Bubble Mailer. The mailer needs to have a label on it to be shipped. If you choose to label it yourself, make sure that all necessary elements are present and legible. Include the delivery address in the center, the return address in the top left corner, and postage in the top right.Is a 6×9 Envelope Considered a Letter or a Flat? A 6×9 envelope is considered a letter. It is not considered flat because its dimensions do not fulfill the requirements of a flat. A flat must have one dimension greater than 6.125 inches high or 11.5 inches long, and 0.25 inches thick.Is a bubble mailer considered a flat? Thick Envelopes: Includes bubble-mailers and other large, padded envelopes and mailers and has the same size restrictions as a flat. Since a Thick Envelope is under 1 cubic foot, the Stamps.com software does not add any USPS surcharges or ask for package dimensions.It depends, If your bubble mailer is an envelope that is 6*9 then it needs 1 First Class Forever stamp which will cost you around 0.60$. How many stamps do I need for a 6-ounce 9x12 envelope? It is considered a large envelope and includes 9×12, legal, and manila envelopes, two stamps are needed for the first ounce, and postage will be an ...I traveled to the Bahamas to experience the 'resort bubble' at Baha Mar. Here's what my stay was like. Since the initial, near-total shutdown of travel when the coronavirus pandemi...Uncategorized. To be classified and priced as a package (parcel), a mailpiece must be flat-size or larger, if rigid, or more than 3/4″ thick. When padded bags (e.g., ReadyPost® “cushion mailer”) have a thickness of 3/4″ or less and are flat-size and somewhat flexible, they should be classified and priced as a large envelope. ….

Nov 8, 2018 · Bubble mailers accommodate a range of merchandise. As you prepare shipments, the weight, size and thickness determines the type of postage you need to buy. An envelope up to 12 inches tall by 15 inches wide and three-quarter inches thick can ship as a first class mail "flat" if it weighs 13 ounces or less. Is a bubble mailer considered a flat? Thick Envelopes: Includes bubble-mailers and other large, padded envelopes and mailers and has the same size restrictions as a flat. Since a Thick Envelope is under 1 cubic foot, the Stamps.com software does not add any USPS surcharges or ask for package dimensions.Padded Envelope Size Chart: Common Sizes. Envelope Dimensions. Typical Usage. 10 in. x 13 in. Unfolded mailings about 9-3/4 in. x 12-3/4 in. Large catalogs, photos, and reports. 9 in. x 12 in. Unfolded mailings on 8-1/2 x 11 sheets of paper. Reports, catalogs, magazines, or journals.Polyethylene mailers, like our Poly Mailers, must be at least 2 mils thick for shipments up to 5 pounds and 4 mils thick for shipments up to 10 pounds (and are not acceptable for shipments over 10 pounds). When poly mailers are used, their overhang should not exceed 0.5 inches when the package is lying flat and have a uniform thickness.Thick Envelopes: Includes bubble mailers and other large, padded envelopes and has the same size restrictions as a flat. Since a thick envelope is under 1 cubic foot, you are not required to enter package dimensions. Packages: Includes anything up to 84" when measuring the distance of the longest side, plus twice the width and twice the height.A mailpiece must be flat-size or larger, if rigid, or over 3/4" thick to be classified and priced as a package (parcel). For padded bags (e.g., ReadyPost ® “cushion mailer”), when the …When it comes to hiring a house cleaning service, one of the most important factors to consider is the pricing model. Two common pricing models in the industry are hourly rates and...Shipping bubble mailers with USPS is not only straightforward but assures a high level of service at affordable rates. No matter the final destination of your bubble mailer, USPS provides a streamlined process that makes shipping an effortless task. Next time you need to send a bubble mailer, take advantage of the efficient and economical ...As home prices keep rising, some experts see signs of a housing market bubble emerging. Here's what experts say to expect. By clicking "TRY IT", I agree to receive newsletters and ...Typically bubble mailers come in 50 or 100 packs, as the link to Amazon offers. They’re an affordable staple for shipping baseball cards priced at roughly 20 cents each. The number one use of a bubble mailer is to send a single card in a top loader, or multiple cards via USPS first class shipping, for example. Is a bubble mailer considered a flat, What is a Poly Mailer? Poly mailers are those nifty plastic envelopes you see everywhere. They’re lightweight, durable, and perfect for shipping a variety of items. But here’s a question I get asked a lot: is a poly mailer considered an envelope? Technically, it’s a special kind of envelope—water-resistant, tear-proof, and way cooler ..., A bubble mailer can be used to ship fragile items, books included. Typically, two or three books are the minimum number of reading materials you can fit inside this envelope. ... Flat Mailers and Chipboard Mailers. If you are sending important papers such as certificates, magazines, and legal documents, flat and chipboard mailers are ..., My usual packages are 6" x 9" about 1/2" thick 3 - 5 oz. They have to be sent as a PACKAGE / thick envelope. I took one to the counter, to verify, and the post person showed me how it has to slide through the 3/4" slot, and has to be flexible up to 1" to qualify for that class of mail (package/thick envelope, first class)., A 6×9 bubble mailer is considered a large envelope by USPS standards, as it exceeds one of the following dimensions: length greater than 11.5 inches, height greater than 6.125 inches, or thickness greater than 0.25 inches. ... For example, if you use a Priority Mail Flat Rate Envelope for your bubble mailer, you need to pay $8.25 in postage ..., For example, sometimes when you mail a "letter", the postal service classifies it as a "flat", while sometimes when you mail a flat card, the postal service classifies is as a "letter". The basic rule to remember is that these categories are based on the size of the piece, not the content., Stock and Custom Rigid Mailer Envelopes. Often referred to as flat mailers, rigid mailers or chipboard mailers, these are best used for products that require protection, when a box would simply result in overpackaging. (More on right-sizing and avoiding overpackaging in this post). Documents, photographs, stationary, books and most …, Shipping bubble mailers can be tricky especially if you don't get the service provider's flat-rate package. Their shipping cost would depend on the thickness of the bubble mailer. For your reference, padded mailers that are not more than 3/4 inch thick are considered an envelope., A granny flat is a small dwelling located close to the main house and contains a bedroom, kitchen, bathroom and living space. Here's how to tell if your home needs one. Expert Advi..., For example, if you use a Priority Mail Flat Rate Envelope for your bubble mailer, you need to pay $8.25 in postage, which means you need 15 Forever stamps ($8.25 / $0.58 = 14.22, rounded up to 15). Here is a table that shows how many stamps you need for different weights of bubble mailers using Priority Mail Flat Rate Envelopes: , Choose from our extensive range of bubble lined envelopes that includes Sealed Air Mail Lite® products. Available in over 10 sizes – there are options for letter, large letter, small parcel, and even medium parcel packages. White and gold coloured bubble envelopes available. Paper and plastic bubble envelope varieties – opt for the bubble ..., Instances Where You Will Want to Use Bubble Mailers. Bubble mailers have an extremely durable exterior, and interior cushioning for packages. That makes this kind of mailer perfect for sending flat, solid items that need a bit of extra padding to survive the journey. A bubble mailer is great for use with books, CDs and DVDs, jewelry, small ..., Padded Envelope Size Chart: Common Sizes. Envelope Dimensions. Typical Usage. 10 in. x 13 in. Unfolded mailings about 9-3/4 in. x 12-3/4 in. Large catalogs, photos, and reports. 9 in. x 12 in. Unfolded mailings on 8-1/2 x 11 sheets of paper. Reports, catalogs, magazines, or journals., I'm (USA) wanting to send my friend a necklace, so to protect it I want to put it in a bubble mailer. I'm shipping internationally so (I think) have to go in one of the flat-rate shipping envelopes to make it the lowest price since shipping label estimates all seem to be wildly more expensive., Jul 4, 2022 · The bubble mailer is perfect for sending small items, especially flat items, like brochures or flyers. 3. Use a large, flat envelope. This one definitely has the most benefits.Stamp a 5 x 7 envelope with your favorite design. Cover the stamp with clear archival glue (such as Mod Podge) and stamp it again to cover , What is a Large Envelope (Flat)? - USPS, As long as the bubble mailer is uniformly flat, it's accepted as a flat. Flats can be as thick as 3/4". I know you've seen those ULine books. Thats maximum thickness. So as long as a bubble mailer contains something that is flat like a book, then it will ship as a flat., A padded envelope, bubble mailer, or plastic (Tyvek or Poly) sleeve. Packages thicker than 3/4 inches don't qualify for USPS First Class Mail rates. Envelope. A large, flat envelope no thicker than 3/4 inches. Note. Envelopes are not supported with Canada Post through Shopify. Flat rate. Flat rate packaging is offered by most carriers., Moving can be expensive. Our guide breaks down the best moving companies that off flat fees to help you stay in budget. Expert Advice On Improving Your Home Videos Latest View All ..., Are Bubble Mailers Packages or Envelopes? This depends on the thickness of your bubble mailer. Once packed, if your bubble mailer is 3/4 of an inch thick or less, it’s considered an envelope. If your bubble mailer is over 3/4 of an inch thick, it’s considered a package. Your bubble mailer will most likely be a package. , 2. Choosing the Mailer Thickness. USPS rules for the strength and thickness of the plastic poly mailer are quite straightforward: For easy loads up to 5 pounds, the mailer must be a minimum of 2 mil thick. For easy loads between 5 and 10 pounds, the mailer must be at least 4 mil thick., Stock and Custom Rigid Mailer Envelopes. Often referred to as flat mailers, rigid mailers or chipboard mailers, these are best used for products that require protection, when a box would simply result in overpackaging. (More on right-sizing and avoiding overpackaging in this post). Documents, photographs, stationary, books and most commonly ..., A bubble mailer weighs around 0.4 oz for the smaller sizes but it varies. With the label and tape, around 55 magic cards will be under 4 oz. The dollar store has cheap bubble mailers if you just need 2-4 You can also use a USPS priority flat rate padded envelope if you are sending more than 1lb of cards., Overview. Ensure your mailing is clean, dry, and protected with our white, cushioned, #2 poly bubble mailer. Designed for your convenience and peace of mind, this high-quality mailer is available in a pack of 25 units for Solutions for Small Business™ customers., Sep 22, 2022 · Generally speaking, though, a bubble mailer would not be considered a flat as it is not a piece of paper or cardboard. Rather, it is a type of plastic envelope that is inflated with air or bubble wrap in order to protect its contents. , Options markets are so optimistic, they look like they did during the tech bubble of the early 2000s. Jump to Options markets are so optimistic, they look like they did during the ..., A bubble mailer can be used to ship fragile items, books included. Typically, two or three books are the minimum number of reading materials you can fit inside this envelope. ... Flat Mailers and Chipboard Mailers. If you are sending important papers such as certificates, magazines, and legal documents, flat and chipboard mailers are ..., Are Bubble Mailers Packages or Envelopes? This depends on the thickness of your bubble mailer. Once packed, if your bubble mailer is 3/4 of an inch thick or less, it’s considered an envelope. If your bubble mailer is over 3/4 of an inch thick, it’s considered a package. Your bubble mailer will most likely be a package. , Can You Put Small Packages In Usps Drop Box00:22 - What is a bubble mailer considered USPS?00:44 - Does USPS have free padded envelopes?01:06 - Is it cheaper..., Envelopes must be rectangular and made of paper to qualify for letter prices. Your envelope can be a maximum of 11-1/2" long x 6-1/8" high. (A standard No. 10 envelope is 9-1/2" long x 4-1/8" high.) You can fold what you put in your envelope, but it needs to stay flat—no more than 1/4" thick., Thick envelopes, including bubble mailers or padded envelopes, meet the same postal size restrictions as a flat package. When is a bubble m ailer considered a flat? A bubble mailer that is less than 3/4 of an inch thick and weighs less than an ounce qualifies as a flat., The bubble mailer counts as an envelope if its thickness is 3/4 of an inch or less. Yet, it qualifies as a package if it measures more than 3/4 of an inch thick after packaging. This straightforward differentiation can not only prevent confusion but also guarantee a smooth delivery experience. What is the cost of mailing a bubble mailer? , My usual packages are 6" x 9" about 1/2" thick 3 - 5 oz. They have to be sent as a PACKAGE / thick envelope. I took one to the counter, to verify, and the post person showed me how it has to slide through the 3/4" slot, and has to be flexible up to 1" to qualify for that class of mail (package/thick envelope, first class)., Poly mailers come in sizes ranging from the size of a letter-sized envelope to approximately the size of a flat shipping box. They are flexible enough that relatively large mailers can fit inside home mailboxes. ... You should also buy bubble mailers if some of your products are fragile. Hardcover books are better suited to bubble mailers than ...