How many stamps to mail large envelope

May 10, 2023 · A 9×12 (9 inches by 12 inches) envelope is categorized as a “large envelope,” with postage at $1.26. This price is the equivalent of two Forever stamps at $0.63 each ($0.63 x 2 = $1.26). This postage covers the first ounce only. You will need more stamps for each extra ounce of the envelope’s weight.

How many stamps to mail large envelope. The number of stamps relies on many factors, the most important of which is your envelope or letter's total weight. You can mail between 4 to 6 standard 8.5″x 11″ pages of paper plus one standard size envelope in one First-Class stamp because all these combined to make almost 1 ounce. The current First-Class stamp rate is 55 cents.

Large Letter. Max. 353mm (L) x 250mm (W)x 25mm (D) Weight. First Class. Second Class. 0 - 100g. 2 stamps. 2 stamps. 101 - 250g.

International shipping can be a complex process, especially when it comes to determining the postage required for different-sized envelopes. If you frequently send mail abroad usin...Standard First-Class Mail postage starts at $0.66, meaning stamps for nonstandard letters cost an additional $0.40 ($1.06-$0.66=$0.40). Large Mailpieces, Envelopes, and Small Packages. Letters exceeding the maximum envelope length, height, or thickness for First-Class Mail are charged large envelope prices.How many stamps should I put on a 9×12 envelope 2021? 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.First Class large envelope (flats) - 1 oz: $1.39 ... Priority Mail (Medium Flat rate box): $18.40 Priority Mail (Large flat rate box): $24.75 Media Mail (1 lb): $4.13 Media Mail (2 lbs): $4.87 USPS postage guide USPS's postage calculator: You need this many stamps: * Tries to find the absolute minimum but may miss by a stamp or a few cents ...Calculate Postcard price. View Flat Rate Envelopes. View Flat Rate Boxes. Calculate price based on Shape and Size.An easy way to turn a First Class mailpiece into a package is to make sure it is at least ¾" thick at any point. Once a mailpiece is more than ¾" thick, the USPS considers the mailpiece to be a thick envelope which is subject to package rates. Although packages require slightly more postage than letters and large envelopes, this is the ...How Many Stamps for Large Envelope. If 1st class stamp, of 50 cents value is used then it would take 2 stamps to ship at a 1 ounce weight and 8 standard stamps for a 13 ounce package. For intermediate weights, add 21 cents to the $1 base charge for each additional ounce. ... Three ounces of standard size rectangular mail stamps envelopes ...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". A large envelope cannot exceed 13 oz; otherwise, it will be considered ...

First-Class Mail Postcards: Minimum size is 3½ x 5 inches, maximum size is 4¼ x 6 inches and allowed thickness is 0.007 inch to 0.016 inch. First-Class Mail Letters: Maximum weight is 3.5 ounces, minimum size is 3½ x 5 inches, maximum size is 6⅛ x 11½ inches and allowed thickness is 0.009 x ¼ inch. First-Class Mail Flats (large envelopes ...Large Letter. Max. 353mm (L) x 250mm (W)x 25mm (D) Weight. First Class. 0 - 100g. 2 stamps. 101 - 250g. 3 stamps. 251 - 500g.Christmas Card. Max. 240mm (L) x 165mm (W)x 5mm (D) Weight. First Class. Second Class. Up to 100g. 1 stamp. 1 stamp. More than 100g.Yes. No. Classic bouquets (12 inch size) can all be mailed with 4 Forever stamps. Mini bouquets (6 inch size) can be mailed with just 2 Forever stamps. Grande bouquets (17-19 inch size) can be mailed as a package so you can purchase postage online or bring it.Find out how many stamps you'll need to post your large envelope second class through Royal Mail within the UK. ... The table below tells you how many stamps you need to post a Large Envelope Second Class... Large Envelope. Max. 353mm (L) x 250mm (W) x 25mm (D) Weight. Second Class; 0 - 100g: 2 stamps: 101 - 250g: 2 stamps:Head to USPS's official website to see how much stamps cost and how heavy your envelope can be. Large envelopes or small packages currently cost $1.20 to mail. First-Class Mail letters can't weigh more than 3.5 oz (99 g), and First-Class envelopes can't weigh more than 13 oz (369 g).That would be the easiest and quickest way to figure it out. There's a lot of variables. If it's just papers you're mailing in there and the envelope plus documents weigh 3oz it would only take 1 stamp + 2 additional ounce stamps = $1.11. But if it weighs 3.1 ounce then you'll need 4 ounces of postage $1.35.

Stamps First-Class Mail . $5 Floral Geometry Stamps. Definitive $5.00. $20.00 $2 Floral Geometry Stamps. ... Non-Machineable for Square Envelopes. $22.40 Thank You Stamps. Forever 68¢ | Multiple Stamp Designs. $13.60 Healing PTSD Stamps. First Class Semipostal 85¢ ...Letter or greeting card - 30g. Standard DL (110mm x 220mm) envelope with 4 sheets of A4 - 44g. CD in bubble envelope - 130g. A4 envelope with 20 sheets of A4 - 160g. Mobile phone in bubble envelope - 180g. DVD in bubble envelope - 190g. 400 page paperback book in bubble envelope - 310g.The number of stamps relies on many factors, the most important of which is your envelope or letter's total weight. You can mail between 4 to 6 standard 8.5″x 11″ pages of paper plus one standard size envelope in one First-Class stamp because all these combined to make almost 1 ounce. The current First-Class stamp rate is 55 cents.The cash envelope system is a great way to improve your finances. It gives you control over your money so you know where your money is going. Home Money Management Are you having ...

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You must be on the Stamps.com Premier plan in order to use Certified Mail Forms and Envelopes. If you are not a Premier member, fill out and attach USPS Form 3800 and be sure you have Certified Mail Forms and Envelopes ... • Use for letters or large envelopes • Never run out of stamps again E-commerce Integrations • Retrieve order data ...Flats // Large Envelopes. The baseline postage rate to mail a Flat/Large Envelope has increased from $1.35 to $1.39 in postage, but the price for each additional ounce also stayed the same at 24 cents per additional ounce. This means that a flat that weighs 1.01 ounces, for example, will now require $1.63 in postage.Here are some general guidelines: So for a standard 8×11 envelope weighing 1 ounce or less, only one $0.55 stamp is needed. For a 3.5 ounce 8×11 envelope, you would need two $0.55 stamps plus one $0.21 stamp, for a total of $1.31 in postage. For international mailings, the postage rates increase significantly.Letters: Can be up to 6-1/8" tall x 11-1/2" long, 1/4" thick, and cannot weigh more than 3.5 ounces to qualify for the First-Class Mail letter rate. If you want to send a letter using Priority Mail or Priority Mail Express, we suggest you use a Flat Rate Envelope (see below).. Large Envelopes & Flats: Can be up to 12" tall x 15" long, 3/4" thick, and cannot weigh more than 13 ounces to qualify ...First Class large envelope (flats) - 1 oz: $1.39 ... Priority Mail (Medium Flat rate box): $18.40 Priority Mail (Large flat rate box): $24.75 Media Mail (1 lb): $4.13 Media Mail (2 lbs): $4.87 USPS postage guide USPS's postage calculator: You need this many stamps: * Tries to find the absolute minimum but may miss by a stamp or a few cents ... A standard stamp book contains 20 first-class stamps, while a Forever Stamp book also contains 20 stamps. The price of postage stamps varies depending on the size of the mail item, ranging from $0.40 for a standard-sized postcard to $4.50 for large envelopes and small packages.

Find out how many stamps you'll need to post your large parcel through Royal Mail within the UK. ... The table below tells you how many stamps you need to post a Large Parcel... Large Parcel. Max. 1500mm (L) ... Large Envelope; Large Letter; Large Parcel; Letter; Medium Parcel; Parcel; Passport; Present;Envelopes: Rates for First Class Mail flats/large envelopes (1 ounce) are $1.16. Each additional ounce is $0.20. ... How many stamps must I put on an envelope? All envelopes (or flats) must be rectangular. Otherwise, an additional fee may apply. Other size restrictions come in based on the type of item you are mailing. Additional fees apply …Column heading 2. $1.07 for a single stamp or $0.92/stamp in a booklet. Column heading 1. Over 30 g up to 50 g. (Up to 9 sheets of paper*) Column heading 2. $1.30. View specific size and weight measurements for standard mail.How Many Stamps Do I Need For A 9×12 Envelope? Even though we've gone through the specifics in great detail, you might still be struggling with the larger 9 inches by 12 inches envelopes. We figured we'd help you out by including an entire section dedicated to this conundrum.In the United States, Canada, Australia and many other countries, you'll pay about $1.35 for a standard-size stamp or $1.38 for a metered mail or priority envelope, regardless of the weight. If you've got a thick bubble mailer, it should be around $4.50.Please select from the following options. Calculate Postcard price. View Flat Rate Envelopes. View Flat Rate Boxes. Calculate price based on Shape and Size.Below are the rates for standard envelopes for normal envelopes like a letter or birthday card, no bigger than 11.5" x 6+⅛" (see envelope requirements). The postal service refers to large envelopes as 'flats.' — View rates for flats. 1 ounce ($1.55) One Global Forever stamp ($1.55) Requires Ground Transportation. Calculate Postcard price. View Flat Rate Envelopes. View Flat Rate Boxes. Calculate price based on Shape and Size. Rates for flats (large envelopes) and all global first-class mail increased. Global forever stamps went from $1.15 to $1.20. Rates on additional ounces for flats (large envelopes) went up by $0.05 per additional ounce for domestic flats and changed for international flats as well.3 stamps is enough to cover the correct postage, which is $1.56 for a "flat" or "large envelope". If you give it to a clerk, they should put it with the flats. If it just gets picked up by your carrier, it'll probably be dumped in with all the other letters. Either way it should be fine as long as it's uniformly flat, whether squished or not.Calculate Postcard price. View Flat Rate Envelopes. View Flat Rate Boxes. Calculate price based on Shape and Size.

eBay standard envelope is more affordable than using USPS First Class Mail Service when shipping packages weighing less than 3 oz - see our rates below: Weight. Price. 1 oz. $0.64. 2 oz. $0.88. 3 oz. $1.12.

We would like to show you a description here but the site won't allow us.Letters, bills, greeting cards, and other documents can be sent in standard white, manila, or recycled paper envelopes. Items needing extra protection can be sent in bubble-lined, padded paper, or waterproof envelopes. These envelopes, along with stationery and prepaid First-Class Mail postcards and envelopes, can be purchased at the Post Office.The number of stamps you'll need depends on the size and weight of your letter. See how to send a letter. Below are the rates for standard envelopes for normal envelopes like a letter or birthday card, no bigger than 11.5” x 6+⅛” (see envelope requirements). The postal service refers to large envelopes as 'flats.' — View rates for flats.The Length of Large Envelopes in 11-1/2 inches which can go up to a maximum of 15 Inches. The minimum thickness of Large envelopes is 1/4 Inches and the maximum thickness of Large Envelopes can’t exceed 3/4 Inches. The Measurement of a Large Envelope is given in the below table:For example, if you were to mail a large envelope that weighs three ounces, the final price would come down to $1.00 plus $0.30 to cover the charge for the additional 2 ounces of weight. ... How Many Stamps Do I Need For a Large Envelope. Large envelopes are also commonly referred to as flats with the USPS. An envelope is considered to be ...At its core, a large envelope is a mail item that doesn't fit the size standards of a First-Class Mail letter. In other words, it has at least one dimension past 6⅛" tall, 11½" long, or ¼" thick. ... How many stamps do I need for a 9×12 envelope? The number of stamps you must affix to your 9" x 12" envelope depends on the ...To figure out the correct number of stamps, use the following guide. You will need approximately 3.5 to 5.0 stamps for a large 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. International mail.Buy Stamps. Schedule a Pickup. Calculate a Price. ... Priority Mail® MILI-PAC Envelope. Pack of 10. 15"(L) x 11-5/8"(W) $0.00 Priority Mail Express® Padded Flat Rate Envelope. Pack of 10. 12-1/2"(L) x 9-1/2"(W) $0.00 Priority Mail® Forever Prepaid Flat Rate Envelope. Includes Customer's Return Address ...

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ShipStation offers affordable USPS postage thanks to our close relationship with USPS postage provider Stamps.com. These rates do not require you to ship a certain volume of shipments. ... USPS First Class Mail also supports letters, envelopes, thick envelops, flat rate envelopes, and postcards. ... USPS First Class Large Envelopes and Flats ...Twice a Month ($136.00 total per month): 6-month subscription at $68.00 per roll plus shipping. 12-month subscription at $68.00 per roll plus shipping. Please Note: If there is …We would like to show you a description here but the site won't allow us.Large letter (500g) Max. dimensions. 260 x 360 x 20mm. E.g. C5, C4, B4 size envelopes. Regular delivery timetable (incl. GST) $7.50. Equivalent number of $1.50 stamps. 5. If you have received an invoice for underpaid mail and have additional questions, you'll find more information on our Underpaid mail page.Why Forever Stamps Are Great for Entering Sweepstakes. If you enter mail-in sweepstakes, buying Forever Stamps can protect you from rising postage stamp costs. For example, mailing an envelope with your entry form in it today might cost you $0.60. In the future, sending the same letter could cost you $0.70 or more.When sending out cards such as a birthday card or greeting card, it is important to note that size and weight both play a large factor in determining how many stamps must be used. When mailing through USPS the average-sized card can be sent out with one $0.55 First Class stamp or a forever stamp. Video unavailable. This video is unavailable.Large envelopes (flats) for First-Class Mail International may not contain goods and must be rectangular, flexible, and uniformly thick, with the following maximum limits: Length 15" x Height 12" x Thickness 3/4", with a max weight of 15.994 oz.. Large envelopes that are bigger than maximum size limits for First-Class Mail International or are rigid or lumpy will be charged the First-Class ...The most popular option for shipping a passport is to use the Priority Mail Express Flat Rate Envelope. It’s the cheapest sub-set of Priority Mail Express that the US Postal Service offers, comes with full package tracking, as well as a money-back guaranteed delivery date. USPS Priority Mail Express is the fastest and most secure …See Forever postage stamp prices and other postage rates. ... Large Envelopes (flats) from $3.00 for all countries. First-Class Package International Service ... XLSX file for USPS Marketing Mail Commercial & Nonprofit Samples ... ….

The words large envelopes and flats are used interchangeably. 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. Dimension. Minimum*. Maximum. Height. 6-1/8 inches.How many stamps do I need to mail a 2022 manila envelope? › If your letter is a standard-sized envelope and weighs 3.5 ounces or less, you will need one stamp. Large envelopes. This includes 9x12, legal, and manila envelopes, Two stamps are needed for the first ounce, and postage will be an additional $0.20 cents after. International mail.How many stamps will you need to mail a 3.4 oz padded envelope from 92377 to 66217? ... The current rate as of 2016 for an 11 ounce large envelope is $3.18. ... How many stamps do you need for a ...Postage Stamp Calculator Calculate the minimum number of stamps required for any ... First Class large envelope (flats) - 1 oz: $1.39 First Class large envelope ... (Medium Flat rate box): $18.40 Priority Mail (Large flat rate box): $24.75 Media Mail (1 lb): $4.13 Media Mail (2 lbs): $4.87 USPS postage guide USPS's postage calculator: You need ...Manila envelopes that measure 5×7 and 6×9 (small and medium sizes, respectively) are standard mail. You'll also require one stamp for both envelopes, provided they weigh below an ounce. However, if the manila envelope weighs more than an ounce, you'll require more stamps. So, the large manila envelope (9×12) will use more stamps.Want to know how many stamps you need to post your letter or parcel through Royal Mail within the UK? How Many Stamps is the right place! Select the type of package below and we'll tell you how many stamps you'll need... Letter. Max. 240mm (L) ... Large Envelope; Large Letter; Large Parcel; Letter; Medium Parcel; Parcel; Passport; Present;3 standard postage stamps or two oversized envelope stamps would be required to cover the cost of postage. The postage rate for the manila envelope is $1.00 for the first Ounce and $0.15 for every additional Ounce. You are wondering it's a similar case as a legal-size envelope and a 9 by 12 envelope, so you are right.Put the stamp on the top right corner of the envelope. This will allow the postage scanning equipment to read the envelope and process it. [8] X Research source. Make sure the address of the sender and the address of the receiver are not covered or obscured by the stamp. 3. Place the letter in the mail.These packs are 25, 100, 250, 500, and 1000. Manila envelope comes in small, medium, and large sizes. The larger sizes are 6×9, 9×12, and 10×13. The manila envelope of sizes 9×12 and 10×13 can store and mailed flat without making creases. While the 6×9 envelope requires a single fold to meet the standard document size that is (8 1/2 x 11 ... How many stamps to mail large envelope, We would like to show you a description here but the site won’t allow us., The postage rate for a Manilla is $1.00 for the first ounce and $0.20 for each additional ounce. You can also mail a manila envelope with forever stamps, and for that, you need two forever stamps ($0.60 each) which costs around $1.20 for a one-ounce letter. Continue reading to learn more about how many stamps I need for a 10×13 envelope., For First-Class Mail flats (large envelopes), the maximum weight is 13 ounces, the maximum size is 12 x 15 inches, and the allowed thickness is ¼ to ¾ inch. As for First …, The low-cost way to ship. eBay standard envelope services are competitively priced and include seller benefits like integrated tracking and shipment protections at no additional cost. Send 1 oz. packages for. $0.64. 2 oz. packages for. $0.88., Calculate the postage required for your letter or parcel using Find a Rate. Pay for and print postage with Ship Online. Look up U.S. postal rates. Look up the postal website of your originating country. Learn the postage you need for a letter or parcel depending on its weight, size and destination., How many Stamps should I put on a 9×12 Envelope One can use 2 First-Class stamps to mail a 9×12 envelope with a weight up to 1 ounce. The United States Postal Service (USPS) charges $1.00 in postage for 9×12 envelopes that weigh up to an ounce. Two $0.55 First-Class stamps provide enough postage in this case., The Retail Rate for Priority Mail Flat Rate—what you'll pay at the Post Office—can be up to 17% more expensive. Flat Rate Package Type. Commercial Pricing Rate. (What you'll pay with shipping software) Flat Rate Envelope. $8.05. Legal Flat Rate Envelope. $8.35. Padded Flat Rate Envelope., The PERMANENT ™ stamp, identified with the letter P in place of a value, is always accepted at the current domestic postage price. If you buy a PERMANENT stamp today, you can use it anytime in the future. One PERMANENT stamp can be used to mail a letter (weighing up to 30 grams) anywhere in Canada. You can also use PERMANENT stamps in ..., Oversized postcards (letter stamps required) $0.60; Large Envelopes or Small Packages: A large envelope is a rectangular mail that is no thicker than 3/4 inch. Another name for this is "flats." On the other hand, a package is a parcel that does not meet the letter-sized or flat-sized mail category., How Many Stamps Should I Put on a 9×12 Envelope that Weighs 4 oz? The United States Postal Service classifies a 9×12 envelope as a flat. The postage required for mailing a 1-ounce flat is $1.20 for the first ounce and $0.25 for each additional ounce. So, the total postage required to mail a 4-ounce envelope will be around $1.95., Used a Forever imprint for most standard mail things. A single Forever stamp wants be enough on send off an item in a commercial envelope measuring 11.5 inches (29 cm) by 5 inches (13 cm) additionally weighing 1 ounce (28 g) or less., The weight of the mail is one of the items used to determine the total bill for a mailing. To better predict postage rates, you should know: How ... With #10 envelope and printed address: 1.0200: 2.0300: With #10 envelope and address labels: 1.0250: 2.0350: 11 by 17" No envelope: 1.0205: 2.0410: With #10 envelope and printed address: 1, Learn about the size, weight, shape, and color requirements for letters and large envelopes mailed with USPS., Large Parcel. Max. 1500mm (L) - total length, width and depth less than 3m. Find out how many stamps you'll need to post your letter through Royal Mail within the UK., How many Stamps should I put on a 9×12 Envelope One can use 2 First-Class stamps to mail a 9×12 envelope with a weight up to 1 ounce. The United States Postal Service (USPS) charges $1.00 in postage for 9×12 envelopes that weigh up to an ounce. Two $0.55 First-Class stamps provide enough postage in this case., $ Quick shipping rate clicks: (updated for new US Postal Service rates starting Jan 21, 2024) Postcard: 53¢. First Class letter (1 oz): 68¢. First Class letter (2 oz): 92¢. First …, A forever stamp is valued at the current price of regular first-class postage. Before forever stamps were introduced in 2007, postage stamps had a set value. That value was printed on the stamp itself. For example, if postage for first-class mail weighing less than one ounce was $0.45, then the stamp would have $0.45 printed onto it., Your envelope must weigh less than 25 pounds. • The Priority Mail "Small Flat Rate Box" is just large enough to mail a DVD, CD or a small book. It also will cost you $4.80 to mail it using Stamps.com or $4.95 if you visit the Post Office. • The Priority Mail "Regular Flat Rate Box" (11-by-8.5-inch) is about the size of a shoe box., We explain how many stamps you need to send a letter, package, or other type of mail. Find pricing and more inside. The cost of mailing depends on the size, weight, and sometimes t..., Migeru85. Level 2. Its for 2019, I just came back from a Mail store, the dude said itll take 5 stamps for the weight. I slapped on 6 for good measure. January 25, 2021 1:32 PM. 0. Reply. Bookmark Icon., The Length of Large Envelopes in 11-1/2 inches which can go up to a maximum of 15 Inches. The minimum thickness of Large envelopes is 1/4 Inches and the maximum …, Shipping with the eBay Standard Envelope is a great way to mail your collectable sports cards, stamps, postcards, coins, and money. When you ship with the St..., 6. For mailable items up to 70 lbs. Expected delivery in 2–5 days. Packages going to certain places (including Alaska, Hawaii, and offshore destinations), or containing hazardous materials or live animals may receive slower service. Back ^. Send mail and packages with USPS online shipping options. Choose your mail service by delivery speed ... , Even if you can somehow shoehorn 30 or 40 pages of paper into a single envelope you'll not be able to send it through the mail with just one stamp attached. Instead you'll have to attach two or three extra stamps (maybe even different kinds of stamps), and that something that we are really going to dig a little bit deeper into in just a moment., 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., We would like to show you a description here but the site won't allow us., How many Stamps should I put on a 9×12 Envelope One can use 2 First-Class stamps to mail a 9×12 envelope with a weight up to 1 ounce. The United States Postal Service (USPS) charges $1.00 in postage for 9×12 envelopes that weigh up to an ounce. Two $0.55 First-Class stamps provide enough postage in this case., For a 1-oz. legal-size envelope (9 ½” x 15”), you will need two Forever stamps for a total cost of $1.10. There are also extra postage fees for each additional ounce. For a Manila envelope weighing less than an ounce, you will need two Forever stamps. , Large Flat Envelope. 12.00″ max. 15.00″ max. Up to 13.00 oz. $1.39. *Rates listed are discounted rates for online purchase available through Stamps.com. You can attach stamps to large envelopes being sent through First-Class Mail® as long as you’ve met USPS’s weight restrictions. It costs $1.39 to send the first ounce of a large envelope., Stamps First-Class Mail . $5 Floral Geometry Stamps. Definitive $5.00. $20.00 $2 Floral Geometry Stamps. ... Non-Machineable for Square Envelopes. $22.40 Thank You Stamps. Forever 68¢ | Multiple Stamp Designs. $13.60 Healing PTSD Stamps. First Class Semipostal 85¢ ..., Send 1 oz. letters or postcards around the world with one Global Forever ® stamp, which currently costs $1.55 and never expires, even if the postage price goes up. For large envelopes (flats) up to 15.994 oz., postage prices vary based on weight and destination, starting from $3.00. Buy International Stamps Learn More., Calculate the postage required for your letter or parcel using Find a Rate. Pay for and print postage with Ship Online. Look up U.S. postal rates. Look up the postal website of your originating country. Learn the postage you need for a letter or parcel depending on its weight, size and destination., How Shape and Size Affect Prices. Different postage prices apply to postcards, letters , large envelopes (flats), and parcels . In general, the bigger your mailpiece, the more it will cost to mail. In First-Class Mail, postcards cost less than letters. Letter size mail costs less than flat-size mail.