Postage for 9 by 12 envelope

Please select from the following options. Calculate Postcard price. View Flat Rate Envelopes. View Flat Rate Boxes. Calculate price based on Shape and Size.

The U.S. Postal Service offers an online calculator that allows you to determine exactly how much postage a given envelope needs. The size, shape and destination of the letter help...Clasp Envelopes, 9" x 12" Envelopes, Gummed Flap With Metal Clasp Closure, Perfect For Office, Home And School Use, 28Lb Brown Craft Envelopes - 9" x 12" - 5 Envelopes Per Pack. 4.6 out of 5 stars. 23. 100+ bought in past month. ... Quality Park 9 x 12 Postage Saving ClearClasp Envelopes, with Reusable Redi-Tac Closure & Gummed Flap, 28 lb ...Product Specs. Description. Brighten your mail with JAM Paper’s Yellow 24lb 9 x 12 Open End Envelopes with Clasp. These vibrant, high-quality yellow envelopes are sure to make your correspondence pop. Made with sturdy 24lb paper, they provide a reliable way to transport your important documents. The practical 9 x 12 size is great for sending ...Dimensions: 9"W x 12"H. White. Peel & Seel closure. Window Position: 1"L; 7-7/8"B. Window Size: 1 1/2" x 4". Sold as 50 per box. 28lb. Uses: catalogs, annual reports, brochures, magazines, invitations, business mailings, direct mail, corporate mailings, financial mailings, personal mail, and more! When sending letters, invoices, or statements ...Find out the types and benefits of Priority Mail Flat Rate® Envelopes from USPS. Save time and money with flat rate shipping for documents and packages.

9x12 Envelopes in catalog or booklet styles. Available in 1 color and full color. Ready to ship in 2 to 6 business days.The actual cost of mailing a 9×12 envelope will depend on several factors. One of these factors is its weight. Mail costs start at $1.00, but it increases by $0.21 for every additional ounce. The USPS considers the 9×12 envelope as a large envelope. As such, its mailing cost is higher than regular letter envelopes.Large Envelope Properties. Select the one that most represents your mail piece. None of the following. is Rigid - does not bend easily. is NOT Rectangular or Square. contains items that cause more than 1/4 inch variation in thickness.Barn Swallow Forever #10 Window Stamped Envelopes (WAG) 4-1/8" (L) x 9-1/2" (W) $4.40. Barn Swallow Forever #6 3/4 Regular Stamped Envelopes (WAG) 3-5/8" (L) x 6-1/2" (W) $4.40 - $364.75. Results Per Page: 1. Shop our selection of First-Class Mail, Standard Envelope Cards & Envelopes on the USPS.com Postal Store.Step 1: Determine the Weight of the Envelope. The first step in calculating postage for a 9×12 envelope is to determine its weight. The weight of an envelope can …Priority Mail® Tyvek Envelope. Pack of 10. 15"(L) x 11-5/8"(W) $0.00 Results Per Page: 1 Helpful Links Contact Us; Site Index; FAQs; Feedback; USPS Jobs Careers; On About.USPS.com About USPS Home; Newsroom; USPS Service Updates; Forms & Publications; Government Services; Other USPS Sites ...Postage Prices. The U.S. Postal Service is the most efficient postal service in the world, with some of the lowest postage prices of any industrialized country. Dollar for dollar, you get a lot of value from your mail. A postage price is more than a number. A price is the balance between the value and service you get from the Postal Service and ...The standard 9×12 Manila envelope postage costs $1.20 for First-Class Mail for envelopes that weigh up to 1 ounce. Additional postage will be required if the envelope weighs more than 1 ounce. How Much Postage for 10×13 Manila Envelope? The postage for a 10×13 Manila envelope is $1.40 for First-Class Mail for envelopes weighing up to 1 ounce.

Buy 9" x 12" Envelopes at Staples and get Free next-Day shipping. No order minimum.Bright White Tyvek®. 9 x 12 inches. Be first to review this item. 9 x 12 catalog envelopes in 14lb. bright white tyvek. These envelopes feature a Peel & Stick closure. Simply remove the strip of paper covering the glue and close the envelope to seal. SKU. 60527. Size.A 6” x 9” envelope weighing up to 1 ounce requires one $.50 first-class rate stamp. For each additional ounce, you’ll have to pay $0.21. So, for a weight between 1 and 2 ounces, it’ll cost you $0.71. Weight between 2 and 3 ounces will cost $.92 and weight between 3.0 and 3.5 ounces will cost $1.13.Use this First Class envelope for any purpose. The larger size provides more room to mail larger tax returns or thicker documents. This envelope is constructed of 28# white wove paper stock with a moisture seal flap which opens on the short side. Specifications: Size: 9 1/2" x 12 1/2". Weight: 28#. Material: White Wove.

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Mail in 1–5 Business Days. First-Class Mail ® service is an affordable and easy way to send envelopes and postcards. First-Class Mail Forever ® stamps cost $0.68 (the current 1 oz price) and will never expire, even if the First-Class ™ postage rate goes up. To send packages, see USPS Ground Advantage ™ service. Kilograms. Please select from the following options. View Dimensions. Letter. Large Envelope. Package. Large Package. Any dimension over 12 inches (30.48 cm) Q1: What size is a #9 envelope? A: A standard #9 envelope size is 3 7/8" x 8 7/8". Q2: What can I fit in a #9 envelope? A: A #9 envelope can fit a standard letter-size paper (8.5" x 11") folded into thirds. It's perfect for return mail, invoices, and letters. Q3: Do I need to use a separate label with window #9 envelopes? A: No.The cost of sending a bubble mailer via Priority Mail Flat Rate depends on the size of the envelope, ranging from $7.95 to $22.95. You can check the exact rates and delivery times for each service by using the USPS Postage Calculator or by visiting your local post office.

Get Staples Clasp & Moistenable Glue Catalog Envelopes, 9"L x 12"H, Brown, 100/Box (187021/19270) fast at Staples. Free next-Day shipping. No order minimum. ... and durable 28-pound stock stands up to the rigors of the shipping process. Each envelope features a traditional kraft color, creating a neutral background for mailing labels or ...Amazon.com: 9 by 12 envelope. Skip to main content.us. Delivering to Lebanon 66952 ...20% off of Staples EasyClose Catalog Envelopes, 9"L x 12"H, White with Green Diamond Border, 100/Box (SPL17167) Staples EasyClose Catalog Envelopes, 9"L x 12"H, White with Green Diamond Border, 100/Box (SPL17167) 4.9 out of 5 stars. 30.Envelopes used for flat mail cannot be more than ¾″ thick, 12″ high, 15″ long or weigh more than 13 ounces. The USPS considers any envelope bigger than this size to be a package, and they will be subject to parcel prices. Pricing depends on the weight of the envelope with prices starting at $1.39 and increasing by $0.24 for each ...We would like to show you a description here but the site won't allow us.USPS Ground Advantage Shipping in 2-5 Business Days 5. USPS Ground Advantage ™ is an affordable and reliable way to send packages up to 70 lbs inside the U.S. Packages up to 15.999 oz are priced by the ounce, rounded up to 4 oz, 8 oz, 12 oz, and 15.999 oz. Packages heavier than 15.999 oz are charged by the pound (rounded up). Prices start at …Kilograms. Please select from the following options. View Dimensions. Letter. Large Envelope. Package. Large Package. Any dimension over 12 inches (30.48 cm)Rate Finder is a tool that helps you calculate the cost of sending mail, parcels or courier items within New Zealand or overseas. You can also compare different delivery options, track your items and print labels online. Rate Finder is your one-stop solution for all your shipping needs with NZ Post.

Flap-Stik makes envelopes self seal. Light weight helps save on postage costs. ... 9 x 12 Booklet Envelopes top. Item 61927; 14lb. Bright White Tyvek® ...

Priority Mail Flat Rate® Window Envelope. Pack of 10. 12-1/2" (L) x 9-1/2" (H) $0.00. Results Per Page: 1. Shop our selection of Shipping Supplies on the USPS.com Postal Store.9 x 12 Open-End Window Envelopes in 28 lb. Bright White for Mailing a Business Letter, Catalog, Financial Document, Magazine, Pamphlet, 50 Pack (White) ... EGP First Class Mail Alternate Window Envelope, Double Window, Quantity 100 Envelopes, 9 1/2" x 12" 4.0 out of 5 stars. 21. $56.52 $ 56. 52 ($0.57 $0.57 /Count)Food retailers who desire to accept food stamps must apply to the Supplemental Nutrition Assistance Program, commonly known as food stamps, and be approved. Food retailers must app...Calculating your postage costs using our USPS postage calculator is quick and easy. Get a USPS shipping estimate for your parcel, in 5 simple steps: Package your item (for help with this, see our packaging guide ) Measure your final packaged item (L x W x H inches) Weigh your package (lbs) Enter the dimensions, weight and destination into our ...Shop our selection of Shipping Supplies on the USPS.com Postal Store. Go to USPS.com Site Index. ... Priority Mail® Tyvek Envelopes. ... Priority Mail Express® Padded Flat Rate Envelopes. Pack of 10. 12-1/2"(L) x 9-1/2"(W) $0.00 Priority Mail Flat Rate® Small Envelopes. Pack of 10. 10"(L) x 6"(H) $0.00 Priority Mail Flat Rate® Envelope ...USPS postage rates offer low-cost mailing and shipping prices for domestic & international customers. See Forever postage stamp prices and other postage rates. ... Square, Oversized, or Unusual Envelopes From $1.12. Postcard Stamps. Standard-sized, ... Priority Mail Flat Rate ® Envelope. $9.85 at the Post Office.Postage Saving ClearClasp Kraft Envelopes, 9 x 12, Brown Kraft, 100/Box, Sold as 100 Each. dummy. Blue Summit Supplies 100 6" x 9" Clasp Envelopes with Gummed Seal, Small Clasp Mailing Envelopes Made From 28lb Kraft Paper, For Smaller Items or Handling Cash, Bulk 100 Pack. dummy.Are you wondering how much it will cost to mail a 6×9 envelope? Look no further. In this article, we will explore the postage requirements for a 6×9 envelope and provide you with v...

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Your envelope will need to be less than 240mm x 165mm and weigh less than 100g, plus the thickness under 5mm, to qualify for this postage rate, so you could use a C6 , DL or C5 envelope to fit within this size range. The cost of a standard 2nd class stamp at letter rate is 66p. Please use this page as a guideline.Letters (Metered): Metered letters are prepaid mail that doesn’t require postage stamps; they’re marked using an electrical machine in the post office. Down below is a table of the weight and prices of shipping mattered letters: Weight being (under ) Price. 1 (oz.) $0.64. 2 (oz) $0.88.WASHINGTON, DC — Today, the United States Postal Service filed notice with the Postal Regulatory Commission (PRC) of price changes to take effect Jan. 22, 2023. The new rates include a three-cent increase in the price of a First-Class Mail Forever stamp from 60 cents to 63 cents. If favorably reviewed by the Commission, the proposed increases ...You need two postage stamps for a 9×12 envelope weighing one ounce or less. USPS First Class or Forever Stamp costs about $1.35 per ounce for large envelopes. You must buy an extra stamp if your parcel weighs more than one ounce. An additional stamp costs $0.24 (per ounce), and you can buy as many as your package requires.Up to $100 insurance included 3; you can buy additional insurance coverage up to $5,000. Priority Mail®. You're sending important items that need to arrive in 1-3 business days. 4. Flat Rate Envelope: From $9.85. USPS Mailing Box (Flat Rate): From $10.40. Your Own Box By Weight/Zone: From $9.25. 1-3 business days 4.Select one of 12 free packaging options and order your complimentary packaging online.: Get your rates. Use our shipping rates calculator by giving us the delivery address, when you would like to ship and what time you’d like your package to arrive.; Or. Look through our rate chart for standard FedEx One Rate prices.; Sign into your account to create a …Priority Mail ® & USPS ® Shipping Rates. The U.S. Postal Service updates its mailing and shipping pricing every year. One of the best ways to help your business save is rate shopping. You can rate shop, compare pricing and get discounts all year long with a shipping software. In fact, you can save 47% on Priority Mail costs!The Priority Mail Express Legal Flat Rate® Envelope is perfect for mailing legal size documents to their destination. Please Note: This product ships in packs of 10. An order of 1 equals 10 envelopes. Each Priority Mail and Priority Mail Express shipment includes USPS Tracking® service. For more information, please visit the Shipping Page.Shop our selection of Shipping Supplies on the USPS.com Postal Store. Go to USPS.com Site Index. Skip to Main Content Skip All Utility ... Custom Mail, Cards, & Envelopes; Postage Prices ; Mail & Shipping Services; Priority Mail Express; Priority Mail; USPS Ground Advantage; First-Class Mail ... x 12-1/2"(H) $79.00 ReadyPost® Bubble Packing ...Booklet and Catalog style 9 x 12 envelopes. We stock several windowed 9 x 12 catalogs. Need help? 800-554-1179. Order History Proofs Upload Artwork Addresses Credit Cards Account Details Log Out. ENVELOPES . Business Envelopes ... First Class Mail; Peel & Stick; Item 61727; ….

9 x 12 Envelopes, Tyvek Envelopes 9x12 (15 Pack), Catalog Envelopes 9x12, Self Sealing Closure, Tyvek First Class, 14 lb., Puncture, Tear & Moisture Resistant, Bulk (15 Pack) ... Quality Park 9 x 12 Postage Saving ClearClasp Envelopes, with Reusable Redi-Tac Closure & Gummed Flap, 28 lb Kraft Paper, 100 per Box (QUA43568) 4.6 out of 5 stars. 421.Shop our selection of Shipping Supplies on the USPS.com Postal Store ... Priority Mail® Tyvek Envelopes. Pack of 10 ... Pack of 10. 12-1/2"(L) x 9-1/2"(W) $0.00 ...A 2oz envelope costs $1.36 cents and needs two forever stamps ($1.32) and one additional ounce stamp (24 cents) A 4oz envelope costs $2.07, equivalent to three forever stamps. An 8oz envelope costs $3.03, requiring four forever stamps plus an additional ounce stamp. You can also choose to simply overpay postage and use only first-class or ...2. Remove the backing and place the sticker along the top edge of the envelope you are mailing, directly to the right of the return address area. Make sure to leave room on the top right portion of the envelope to apply correct postage. On a package, the sticker can be placed to the left of the address area. 3.Priority Mail® Tyvek Envelope. Pack of 10. 15"(L) x 11-5/8"(W) $0.00 ... 12-1/2"(L) x 9-1/2"(H) $0.00 Priority Mail Flat Rate® Legal Envelope. Pack of 10 ... Mail in 1–5 Business Days. First-Class Mail ® service is an affordable and easy way to send envelopes and postcards. First-Class Mail Forever ® stamps cost $0.68 (the current 1 oz price) and will never expire, even if the First-Class ™ postage rate goes up. To send packages, see USPS Ground Advantage ™ service. Please select from the following options. Calculate Postcard price. View Flat Rate Envelopes. View Flat Rate Boxes. Calculate price based on Shape and Size.Order free Priority Mail Padded Flat Rate Envelopes at the Postal Store! Lined with padding for extra protection, these bubble mailers ensure precious mail arrives intact! ... Dimensions: 12-1/2"(L) x 9-1/2"(W) For more information, please visit the Priority Mail Page.What is the Non-Machinable Surcharge for First-Class Mail®? - USPSPriority Mail® Forever Prepaid Flat Rate Padded Envelope. Includes Customer's Return Address. 12-1/2" (L) x 9-1/2" (H) $10.60. Postage for 9 by 12 envelope, The Priority Mail Express Flat Rate® Envelope offers our fastest service for time-sensitive letters, documents or merchandise. Guaranteed next-day and second-day delivery nationwide or your money back. ... Dimensions: 12-1/2"(L) x 9-1/2"(H) For more information, please visit the Priority Mail Express Page. A Universal Product Code (UPC) (11 ..., A letter sent in a standard size envelope weighing 1 ounce or less will require $0.66 of postage or one forever stamp. Each additional ounce is an extra $0.24 in postage. So, a two-ounce letter will cost you $0.90 while a three-ounce one will cost $1.14. Instead of placing two forever stamps on a two-ounce letter, you can place a single first ..., 9 X 12 Self-Seal Brown Kraft Catalog Mailing Envelopes - 28lb - 100 Count, 9x12 Inch (38300) 3,277. 6K+ bought in past month. $2098 ($0.21/Count) $18.88 with Subscribe & Save discount. FREE delivery Wed, Apr 24 on $35 of items shipped by Amazon. Small Business., Nov. 10, 2021. U.S. Postal Service Announces New Competitive Prices and Two New Mail Products for 2022. Postal Service continues to offer some of the lowest letter-mail postage rates in the industrialized world and a great value in shipping as we enhance our reliability and expand our product offerings in service to the American people., Clasp Envelopes, 9" x 12" Envelopes, Gummed Flap With Metal Clasp Closure, Perfect For Office, Home And School Use, 28Lb Brown Craft Envelopes - 9" x 12" - 5 Envelopes Per Pack. 4.6 out of 5 stars. 23. 100+ bought in past month. ... Quality Park 9 x 12 Postage Saving ClearClasp Envelopes, with Reusable Redi-Tac Closure & Gummed Flap, 28 lb ..., Priority Mail Express, Flat Rate, Envelopes, Priority Mail, Free Shipping Supplies . Go to USPS.com Site Index. Skip to Main Content Skip All Utility Navigation. Current language: English ... 12-1/2"(L) x 9-1/2"(W) $0.00 Priority Mail Flat Rate® Envelope. Single or Pack of 10. 12-1/2"(L) x 9-1/2"(H), Adding Postage to 9×12 Envelopes That Weigh More Than an Ounce. Two First Class stamps will cover the cost of a 9×12 envelope that weighs an ounce or less. A First Class stamp has a value of $0.55, but the price to mail a large envelope is only $1.00, so you’ll technically be paying an extra $0.10 for the convenience of using stamps., How much does it cost to mail a 9×12 bubble envelope? Large envelopes. This includes 9×12, legal, and manila envelopes, Two stamps are needed for the first ounce, and postage will be an additional $0.20 cents after., As per current USPS rates, here are the flat mail prices for priority mail or packages: Regular flat rate envelopes $8.95 per envelope. Legal flat rate envelopes $9.25 per envelope. Padded flat rate envelopes $9.65 per envelope. Small flat rate boxes $9.45 per envelope. Regular flat rate boxes $16.10 per box., Maximum for First-Class Mail card prices: 9 inches long, 6 inches high, and 0.016 inch thick. Maximum for letters and other cards: 11-1/2 inches long, 6-1/8 inches high, and 1/4 inch thick. ... of less than 1.3 or more than 2.5 (a square envelope has an aspect ratio of 1, making it nonmachinable). It is more than 4-1/4 inches high or more than ..., W IDTH LENGTH MIN. 6". 877.888.0677. 2023 USPS new pricing affects the First-Class stamp, metered mail rates, and postcards, additional ounces and postcards. The increases raise First-Class Mail prices by approximately 4.2%. These new postage rates will go into effect on January 22, 2023. Get email alerts here., The term flat refers to large envelopes. The postage rate on a manila envelope is $1 of the same size as the one for 9" by 12" envelopes and legal size envelopes. The first ounce of gold is 16 cents and the second ounce is 0. Each additional ounce will cost an additional $20. How much postage do I need for a 2 oz letter?, Mailing, Packing & Shipping. Envelopes. Booklet Envelopes. ... Brown Kraft, Box Of 100. Universal® Center-Seam 9" x 12" Manila Envelopes, Clasp Closure, 28 Lb, Brown Kraft, Box Of 100 4.9 out of 5 stars, average rating value. Read 32 …, First-Class Mail Forever ® stamps cost $0.68 (the current 1 oz price) and will never expire, even if the First-Class ™ postage rate goes up. ... Square, oversized, or unusually shaped envelope stamps start at $1.12. Postcards. Standard-sized, rectangular postcard stamps start at $0.53. Oversized postcards need letter stamps, which start at ..., This stamped envelope features a graphic design of the flag that evokes a rich sense of history even as it presents a recognizable icon in a fresh, contemporary way. Kit Hinrichs created the artwork for this stamped envelope. Ethel Kessler served as art director. 1. Choose a Format., Colorado Hairstreak Stamps $1.12, Sheet of 20 ... Any non-machineable envelope, like oddly shaped or vertical envelopes, as well as lumpy envelopes, rigid envelopes, or mail with clasps, ribbons, or buttons, may use this stamp. Colorado Hairstreak is available in sheets of twenty. The words "NON-MACHINEABLE SURCHARGE" on the stamp indicate its ..., While the #12 Envelopes - 4.75 x 11 stand out for their unique features and numerous use cases, it is important to note that there are alternatives depending on specific requirements. If your mailing needs involve documents that are of a standard letter size, you might find the #10 envelope - 4.125 x 9.5 more applicable., Description. The Priority Mail® Tyvek®* Envelope is a quick, easy, and convenient way to ship Priority Mail®. This durable, water resistant Tyvek® envelope offers you flexibility when shipping a variety of items. Please Note: This product ships in packs of 10. An order of 1 equals 10 envelopes. Additional Information: - Can be used for ..., Please select from the following options. Calculate Postcard price. View Flat Rate Envelopes. View Flat Rate Boxes. Calculate price based on Shape and Size., Mailing, Packing & Shipping. Envelopes. Catalog Envelopes. Item #330784 Office Depot® Brand 9" x 12" Manila Envelopes, Clasp Closure, Brown Kraft, Box Of 25. Office Depot® Brand 9" x 12" Manila Envelopes, Clasp Closure, Brown Kraft, Box Of 25 4.7 out of 5 stars, average rating value. Read 570 Reviews. ..., USPS postage rates offer low-cost mailing and shipping prices for domestic & international customers. ... Square, Oversized, or Unusual Envelopes From $1.12. Postcard ..., A manila envelope needs a different quantity of stamps based on its size and weight. Since August 2019, a manila envelope with a small size (including 5×7 and 6×9) and weighing less than 1 ounce needs 1 Forever Stamp. However, the larger one (9×12 in size) classified as the flat mailing is required two Forever stamps at least., Staples Clasp & Moistenable Glue Catalog Envelopes 10"L x 13"H Brown 12/PK 19005/594413. Staples. 3. $10.14. When purchased online. Add to cart. Best Paper Greetings 50 Pack Blush Pink Envelopes 5x7 with Bronze Lining, A7 Size for Wedding Invitations, Self-Adhesive Peel and Stick. Best Paper Greetings. 1., First-Class Mail Mail in 1-5 Business Days. First-Class Mail ® service is an affordable and easy way to send envelopes and postcards. First-Class Mail Forever ® stamps cost $0.68 (the current 1 oz price) and will never expire, even if the First-Class ™ postage rate goes up. To send packages, see USPS Ground Advantage ™ service.. Buy Stamps First-Class Mail Prices, How Much Does It Cost To Mail A Large Envelope? The stamp for a large envelope costs $0.70. If your mail meets the requirements of a large envelope, that's the only cost to mail. Large envelopes are envelopes with a minimum - maximum length of 11½" - 15", a height of 6⅛" - 12", and thickness of ¼" - ¾"., Please select from the following options. Calculate Postcard price. View Flat Rate Envelopes. View Flat Rate Boxes. Calculate price based on Shape and Size., This applies to all mail classes—domestic and international. For example, if your package weighs 3 lbs 4 oz, it would be charged at the 4 lb-rate. However, if you have a lightweight USPS Ground Advantage ™ package that weighs 5 oz, you'll pay the 8 oz-price (based on the available pricing increments: 4 oz, 8 oz, 12 oz, and 15.999 oz)., The first step in calculating postage for a 9×12 envelope is to determine its weight. The weight of an envelope can vary depending on what is inside and how much it weighs. To get an accurate weight, use a kitchen scale or postal scale to measure the weight of the envelope and its contents. Step 2: Calculate Postage Based on Weight, Rate of Priority Flat Mail: The standard size in the United States for a 6×9 envelope is 9-1/2” x 12-1/2” , according to the Priority Mail Postal Service. The rate of a domestic flat for sending an envelope will be $7.95. For mailing of first-class service Priority, Flat Mail provides additional services to the customers, including ..., The weight limit for your First-Class package also increases from 13 oz. to 15.999 oz when printing the trackable label. Certified Mail with Electronic Return Receipt (E-RR) offers the same benefits of the traditional "Green Card" without the need for manual processing. With E-RR all signatures are stored digitally, and you save $1.20 per ..., 9 inches: Height: 3-1/2 inches: 6 inches: Thickness: 0.007 inch: 0.016 inch: Letter. Property Minimum Maximum; Length: ... Flats. Property Minimum Maximum; Length: 11-1/2 inches: 15 inches: Height: 6-1/8 inches: 12 inches: Thickness: 1/4 inch: 3/4 inch: Parcel. Length: the longest side of the parcel Girth: measurement around the thickest part ..., Mail in 1–5 Business Days. First-Class Mail ® service is an affordable and easy way to send envelopes and postcards. First-Class Mail Forever ® stamps cost $0.68 (the current 1 …, Non-standard and oversize (0-500 g) Oversize or non-standard size envelopes and postcards will cost you more in postage. Maximum dimensions. 380 mm x 270 mm (15 inches x 10.6 inches) If your letter is larger than the maximum dimensions above you’ll need to use our parcel services. Check out our size and weight limits for letters and documents ...