How many stamps should i put on a 9x12 envelope

When mailing 9×12 envelopes, the amount you will pay for postage will depend on the destination and the weight of whatever you are sending. If you weigh your …

Like most rules in the shipping and mailing industry, the amount of stamps you need for a large envelope depends on how many ounces your envelope weighs …Step 4/6: Add your photos to your envelope & weigh it. In the United States, the maximum weight for a first-class envelope is 3.5 ounces. The first stamp covers the first ounce. You can then buy “additional ounce” stamps for each ounce increment. A typical 4×6 print is 0.11 ounces. A standard A6 envelope is 0.18 ounces.By default, it's assumed you have the standard UK 1st (£1.35p), 2nd (85p), Large 1st (£2.10p) and Large 2nd (£1.55p) which are are the April 2024 2024 prices from Royal Mail (link also includes size and weight limits). Alternatively, enter the values of the stamps you have here and press submit.The table below tells you how many stamps you need to post a Large Envelope First Class... Large Envelope. Max. 353mm (L) x 250mm (W) x 25mm (D) Weight. First Class; 0 - 100g: 2 stamps: 101 - 250g: 3 stamps: 251 - 500g: 3 stamps: 501 - 750g: 4 stamps: More than 750g: See Parcel: Letter.Up to one ounce is 50 cents now. Or one forever stamp. A 4x9 envelope meets the criteria for a regular envolopes (rounded down, any envolopes with any one dimension above 6x11.5x0.25" is classified as a flat or large envelope)., and providing it weighs under an ounce and does not fall under "non-machinable" criteria (such as being rigid), a ...Calculating the postage for your letter is based on its weight and size. A general rule of thumb is that a 1 oz letter can be sent with a $0.68 First-Class Mail Forever stamp. However, postage rates may vary for larger envelopes (flats) or nonmachinable items. When it comes to buying stamps and postage, you have options.

Envelopes. From $59.50 at the Post Office. From $55.49 for Commercial Base. From $55.49 for Commercial Plus. Priority Mail International ® From $42.95 at the Post Office. From $40.91 for Commercial Base. From $40.91 for Commercial Plus. Priority Mail International Flat Rate. Envelopes. From $30.90 at Post Office. From $29.66 for Commercial ...Aug 5, 2016 · 2. Use tape to reinforce, not close. You can use tape to reinforce the seams of the Flat Rate Envelope, but the amount of tape being used should not encase the envelope! 3. Flat refers to price, not shape. With Flat Rate Envelopes, bulges and thickness may not matter. Flat Rate Envelopes are best suited for documents, but if you choose to send ...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.Stanford requires applicants to use a 9x12 envelope when sending in teacher/counselor recommendations. This is going to sound stupid, but… How much postage is needed for these sorts of envelopes? thanks! ... <p>I put on 2 "forever" stamps, is that adequate?</p> princessmarion September 3, 2008, 5:24pm 4 <p>i went to the post office ...Currently, the postage rate for a First Class 5×7 envelope is $0.48 for 1 ounce. If your envelope weighs more than 1 ounce, an additional postage of $0.44 is required. In other words, if a 5×7 envelope weighs 1.5 ounce, you will be paying for two stamps. If it exceeds 2 ounces, you will be paying for 3 stamps (the trend continues).

First Class large envelope (flats) - 2 oz: $1.63 First Class large envelope (flats) - 3 oz: $1.87 International postcard or letter (1 oz): $1.55 ... You need this many stamps: * Tries to find the absolute minimum but may miss by a stamp or a few cents Updates: Jan 23, 2024 Updated USPS postal rate with Jan 21, ...We explain whether 7-Eleven sells stamps, plus similar places that sell them. Find out prices, available quantities, and more inside. Short Answer: Many 7-Eleven stores sell stamps...how many stamps do i need for a 9x12 envelope joseph gregory bonannoStep 4: Calculate & Apply Postage. For just 1 $1.55 First-Class Mail International Global Forever stamp, you can send a 1 oz letter or postcard to any other country in the world. Put stamps in the upper right corner of the envelope. (For postcards, put the stamp in the space provided near the delivery address.)How Many Sheets Can One Forever Stamp Handle? Here are a few Forever stamp guidelines I immediately discovered after using my new DYMO scale: 3 sheets of 20 lb 8.5" x 11" paper weighed only .65 oz in a standard envelope and a Forever stamp. 4 sheets were .80 oz. Even 5 sheets made the 1 oz cutoff at only .95 oz.Use our postage rate calculator below above to determine what postage stamp you'll need when mailing your Christmas card, holiday photo cards, or even postcards. Simply enter the details about your letter or postcard and our calculator will automatically determine the postage rate you'll need to pay. This calculator is provided for use in ...

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Here's who qualifies for the SNAP program, and what the program can get you. The Supplemental Nutrition Assistance Program (SNAP) is a federal initiative designed to help low-incom...Two forever stamps are required to mail a one-ounce legal-sized envelope. Each additional ounce requires $0.20. Large envelopes are usually used for mailing sheets of legal documents or papers and photos. These large envelopes are also known as flats.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 ...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.You write the recipient’s address horizontally and vertically centered, or right in the middle of the front side of the envelope. To write the recipient’s address properly, you need the following information: The recipient’s full name. The recipient’s street address. The recipient’s city, state, and zip code.Wondering how to sell stamps? Discover how to value and sell stamps, both online and off. If you buy something through our links, we may earn money from our affiliate partners. Lea...

Clasp Envelopes - 9x12 - Brown Kraft Catalog Envelopes with Clasp Closure & Gummed Seal - 28lb Heavyweight Paper Envelopes for Home, Office, Business, Legal or School Pack- 9 x 12 Inch 15 Pack. 4.7 out of 5 stars. 4,769. 1K+ bought in past month. $8.99 $ 8. 99 ($0.60 $0.60 /Count)How Many Stamps to Mail a Padded Envelope? By The Boxery Team. If you’re like me, you’ve probably scratched your head a few times wondering how many …First-Class Mail Letters . Price paid on a per ounce basis - based on the First-Class Mail stamp price. Maximum Weight: 3.5 ounces - Additional ounces above one ounce have a separate per ounce price. Size Requirements: Minimum Size: 3½ inches by 5 inches. Maximum Size: 6⅛ inches by 11½ inches.Select [Envelope] from [Paper Type]. The screen for selecting the envelope size appears. Select the envelope size from [Envelope/4 6] ([Envelope/A6 Card]). Various sizes of envelopes are available. Specify the correct paper size for the envelopes you have loaded.Size and weight are the two factors that determine how many stamps a manila envelope would require. Manila envelopes that measure 5×7 and 6×9 (small and medium sizes, respectively) are standard mail. ... Let the name be at the top left-hand corner of the envelope ; Put the receiver's address in the middle of the envelope. Add instructions ...That will depend on the value of the stamps and perhaps the dimensions of the envelope. If you have the right values, it would only be one, but it could be a dozen or so if you only have smaller ...Use our postage rate calculator below above to determine what postage stamp you'll need when mailing your Christmas card, holiday photo cards, or even postcards. Simply enter the details about your letter or postcard and our calculator will automatically determine the postage rate you'll need to pay. This calculator is provided for use in ...how many stamps do i need for a 9x12 envelope; 18 เม.ย. . how many stamps do i need for a 9x12 envelope ...Write both the destination and return addresses clearly or print your mailing label and postage. Weigh your envelope using a kitchen scale or postage scale and apply the right amount of postage. Most tax returns are several pages long and weigh more than 1 oz. Tax returns sent without enough postage will be returned.If you're shipping heavier boxes that are still relatively small, a great way to save money is to throw your box inside of a poly mailer, and designate the package as an envelope rather than a box. This is known as the "box in a bag" shipping method, and is one of the shipping industry's biggest cheat codes for cutting down shipping costs.Push the hole over both arms. [5] Seal the flap against the body of the envelope by running over the edge with your thumb. 5. Flatten and secure the arms. Push the clasp arms outward again and flatten them against the flap. To prevent the clasp from catching on other mail, put a piece of tape over the arms. 6.Find out how many stamps you'll need to post your letter or parcel through Royal Mail within the UK. ... A3 Envelope; A3 Letter; A4 Envelope; A4 Letter; A5 Envelope ...

how many stamps do i need for a 9x12 envelope 2023/04/19 2023/04/19

Staples Extra-Heavyweight Clasp & Moistenable Glue Catalog Envelopes, 9"L x 12"H, Manila, 100/Box (121962/19276) 116. $36.89. Buy 9" x 12" Envelopes at Staples and get Free next-Day shipping. No order minimum.Letters, large or thick envelopes, tubes, and packages containing mailable items can be sent using Priority Mail Express. This money- ... This will cover the jewelry's material value should the piece get lost or damaged. Should the jewelry have a material value of greater than $100, Jane can opt to increaseThat will depend on the value of the stamps and perhaps the dimensions of the envelope. If you have the right values, it would only be one, but it could be a dozen or so if you only have smaller ...Aug 6, 2023 · A 9×12 envelope can have a maximum weight of up to 13. So for that envelope with 2 Forever Stamps, $0.24 per ounce for additional Stamps the total cost will be $3.40. For a 2 oz 9×12 envelope we need two Forever Stamps and 1 additional stamp so the total cost will be $0.63+$0.63+$0.24= $1.50.paula deen white beans and ham how many stamps do i need for a 9x12 envelopeAgain, this type of envelope should be fine to post using a regular postage stamp. C7 Envelope Size *click to enlarge* The C7 is the smallest envelope size in this guide. Measuring 84mm by 114mm, this envelope can fit a piece of A5 paper folded into quarters or a piece of A7 paper. Due to the small size of these envelopes, you should …First Class large envelope (flats) - 2 oz: $1.63 First Class large envelope (flats) - 3 oz: $1.87 International postcard or letter (1 oz): $1.55 ... You need this many stamps: * Tries to find the absolute minimum but may miss by a stamp or a few cents Updates: Jan 23, 2024 Updated USPS postal rate with Jan 21, ...When placing an order, you need to use the appropriate size envelope, which means 3 ounces of Forever Stamps and an additional 2 ounces of an ounce stamp, for an approximate cost of 4 ounces. A 1-ounce envelope requires four stamps (2 stamps each for the envelopes and a fourth stamp for the letter).If an invitation is over 6⅛" tall, 11½" wide, or 1/4″ thick, it is classified as a large envelope (this requires additional postage, and different rules apply to large envelopes). 2022 postage rates for large envelopes (also known as flat mail) start at $1.20 and rise in 24-cent intervals based on weight.poopittypoo. • 3 yr. ago. If the package exceeds 1/2” at the thickest part, it cannot be sent with just stamps. That’s called “anonymous mail.”. So you are most likely going to be taking it to the counter to send it first class or printing off a priority click n ship label. As for the cost, it could be considered a large envelope if A ...

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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.Large Envelope. Property Minimum Maximum; Length: 11-1/2 inches: 15 inches: Height: 6-1/8 inches: 12 inches: Thickness: 1/4 inch: 3/4 inch: Package. International Packages …The table below tells you how many stamps you need to post a A4 Envelope... A4 Envelope. Max. 353mm (L) x 250mm (W) x 25mm (D) Weight. First Class Second Class; 0 - 100g:Custom 9x12 Booklet Envelopes in Pastel Colors, Order 9x12 Printed Mailing Envelopes and get free shipping! Use these envelopes to mail documents, How Many Stamps To Put On A Large EnvelopeThe table below tells you how many stamps you need to post a Large Envelope First Class... Large Envelope. Max. 353mm (L) x 250mm (W) x 25mm (D) Weight. First Class; 0 - 100g: 2 stamps: 101 - 250g: 3 stamps: 251 - 500g: 3 stamps: 501 - 750g: 4 stamps: More than 750g: See Parcel: Letter.If you're shipping heavier boxes that are still relatively small, a great way to save money is to throw your box inside of a poly mailer, and designate the package as an envelope rather than a box. This is known as the "box in a bag" shipping method, and is one of the shipping industry's biggest cheat codes for cutting down shipping costs.2. Use tape to reinforce, not close. You can use tape to reinforce the seams of the Flat Rate Envelope, but the amount of tape being used should not encase the envelope! 3. Flat refers to price, not shape. With Flat Rate Envelopes, bulges and thickness may not matter. Flat Rate Envelopes are best suited for documents, but if you choose to send ...The single-piece 1-ounce letter rate is $0.41, the additional ounce price is $0.17, and the single-piece postcard rate is $0.26. The maximum size for letters did not change: 11-1/2" x 6-1/8" x 1/4" thick. When a piece of First-Class Mail exceeds any one of the maximum measurements of a letter, it is classified and priced as a large envelope ...Large Letter. Max. 353mm (L) x 250mm (W)x 25mm (D) Weight. First Class. Second Class. 0 - 100g. 2 stamps. 2 stamps. 101 - 250g.For 3 oz. – You can purchase a domestic Forever stamp and two 15-cent additional ounce stamps for $0.85. There’s also an option to overpay $0.25 using two domestic Forever stamps for $1.10. For 3.5 oz. – You need one domestic Forever, a 35-cent postcard stamp, and a 10-cent stamp for $1.00.UPDATE: We may be dead wrong about this. UPDATE: We may be dead wrong about this. Slate columnist Nathaniel Rich calls our previously-posted advice to save money buying U.S.… Reade...If you don't have any 3-ounce stamps laying around, you'll need one standard Forever Stamp plus two additional-ounce stamps to cover the postage of a 3-ounce letter. If you use 2 Forever stamps instead of 4 Forever stamps, you would need to mail a 4-ounce letter. While it might be a convenient way to send money, it's probably a bad idea ... ….

The envelope needs to be at least 5 inches by 3.5 inches but not bigger than 11.5 inches by 6.125 inches, and no thicker than ¼ inches. It needs to have a …That will depend on the value of the stamps and perhaps the dimensions of the envelope. If you have the right values, it would only be one, but it could be a dozen or so if you only have smaller ...Step #1: You will want to put the recipient’s name and address on the largest side of the package. If shipping to a business, then you should list the business name on the first line. The second line should contain “ATTN:” followed by the recipient’s name. Step #2: After the name comes the mailing address.Printing the delivery and return addresses on envelopes you send out is a good way to represent your business more professionally. Microsoft Word is included in the Microsoft Offic...A 2 Oz 10×13 Envelope needs three Stamps, i.e., 2 Forever Stamps and one additional Stamp for an extra one ounce. This will cost you strong>$1.20+$0.24=$1.44. 2 Forever Stamps and two extra Stamps must be pasted on your 10×13 envelope, whose weight is between 2 ounces and 3 ounces. The cost of 3 ounces 10×13 envelope will be …Feb 25, 2022 · Small Manila Envelope (5 x 7″) = 1 Forever Stamp up to 1oz in weight. 1oz Stamp for each additional ounce (max 3.5oz). Medium Manila Envelope (6 x 9″) = 1 Forever Stamp up to 1oz in weight. 1oz Stamp for each additional ounce (max 3.5oz). Once a small & Medium Manila Envelope goes over 3.5oz it is considered a large (flat) envelope.Small Manila Envelope (5 x 7″) = 1 Forever Stamp up to 1oz in weight. 1oz Stamp for each additional ounce (max 3.5oz). Medium Manila Envelope (6 x 9″) = 1 Forever Stamp up to 1oz in weight. 1oz Stamp for each additional ounce (max 3.5oz). Once a small & Medium Manila Envelope goes over 3.5oz it is considered a large (flat) envelope.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...So if you paid $0.49 and the rate rises to $0.50, you can put two Forever Stamps on a package to get $1.00 worth of postage. Simply so, how many stamps can you put on an envelope?Generally speaking, you can mail 4-5 pages of regular paper, plus an envelope, for the regular first class ("one stamp") rate.Place the stamp on the top right corner of the envelope. The postage stamp on the envelope will allow your letter to be scanned by the machine. Ensure that the sender's address (return address), as well as the mailing address, are not hidden or covered by your postage stamp. Put the letter in the mailbox. How many stamps should i put on a 9x12 envelope, 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., 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., How many stamps do I need for a large yellow envelope? For customers with larger envelopes, postage costs around $1.00 for the first ounce and $0.20 for each additional ounce. For a legal-sized envelope: Two Forever stamps (currently valued at $0.55 per stamp) are needed to mail a one-ounce legal-sized envelope (9½" by 15" envelope)., How Many Stamps To Ship a USPS Bubble Mailer. This depends on several factors. If you'd like to use stamps to ship your bubble mailer up to 4 ounces through USPS First Class, it will cost around $3.74. This will take 7 forever stamps ($0.55 per stamp) to ship your bubble mailer., Peel the backing off the stamps and press them onto the envelope or package. If possible, position them in the upper righthand corner or somewhere else where they'll be plainly visible to the mail handler. Arrange multiple stamps in 1 or 2 rows, making sure they don't overlap., We would like to show you a description here but the site won't allow us., The table below tells you how many stamps you need to post a A4 Envelope... A4 Envelope. Max. 353mm (L) x 250mm (W) x 25mm (D) Weight. First Class Second Class; 0 - 100g:, By Staff Writer Last Updated November 27, 2023. When it comes to mailing items, the size of the envelope or package is an important factor in determining the cost …, A 2 Oz 10×13 Envelope needs three Stamps, i.e., 2 Forever Stamps and one additional Stamp for an extra one ounce. This will cost you strong>$1.20+$0.24=$1.44. 2 Forever Stamps and two extra Stamps must be pasted on your 10×13 envelope, whose weight is between 2 ounces and 3 ounces. The cost of 3 ounces 10×13 envelope will be …, 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 ..., Yes. 1. Reply. kingu42 • 2 yr. ago. So long as there's not a variation in thickness of greater than 1/4" across the entirety of the package, it's a first class flat, and the postage is $2.16. 2. Reply. Hey, I was just curious how many stamps I should put on a 5.6 Oz, 9x12 envelope. Thank you in advance!, In a general sense, assuming you have a regular 9x12 envelope as you described, and is less than 3/4 inch thick and not rigid or misshapen, the general rule is the first ounce and the envelope are the equivalent of $1 (or two forever stamps). Each additional ounce is about .20 cents., Step 4: Calculate & Apply Postage. For just 1 $1.55 First-Class Mail International Global Forever stamp, you can send a 1 oz letter or postcard to any other country in the world. Put stamps in the upper right corner of the envelope. (For postcards, put the stamp in the space provided near the delivery address.), These envelopes are typically printed with just the customer's logo and address on the top left corner. However, these large envelopes have a ton of space that can be utilized to create a stunning first impression. 1. Open Microsoft Word. I will be using Microsoft Word 2013 to create this one of kind custom 9×12 envelope. 2. Page Layout, Stamps. Supplies. Cards & Envelopes. Collectors. Gifts. Business Supplies. Saved. Search Store . Cards & Envelopes. 1 - 25 of 25 Results. Sort by: Issue Date. Name (A-Z) ... Barn Swallow Forever #9 Window Stamped Envelopes (PSA) 3-7/8"(L) x 8-7/8"(W) $4.40 Barn Swallow Forever #6 3/4 Window Stamped Envelopes (WAG) 3-5/8"(L) x 6-1/2"(W) ..., 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 ..., First of all, fill a basin halfway with boiling water. After that, mix water with some lemon-scented dish soap. Next, allow the stamps to float on the surface for at least 15 minutes. After that, remove the stamps. Hopefully, now you can easily remove the stamps. Keep in mind that the stamps should be dried out., How much postage do i need on a 9x12 envelope. How much postage should i put on a 9x12 envelope. How much postage goes on a 9x12 envelope. ... You can also stick the stamps if you know how many stamps are already required. In an envelope from 9- 12, the first ounce requires two stamps forever. This is the equivalent of $ 1.00. Also, you have to ..., A large manila envelope less than one ounce in weight requires two forever stamps. You will once again need to add "additional ounce" stamps if the envelope weighs more than one ounce. How much postage do I need for a 9×13 envelope? Standard-sized, rectangular envelope stamps start at $0.58. Square, oversized, or unusually shaped envelope ..., Aug 21, 2018 · Address your 9-inch by 12-inch envelope by placing the mailing address in the center and the return address in the upper left corner on the same side as the mailing address. Bring the 9-inch by 12-inch envelope to the post office so it can be weighed on a postal weight scale to determine postage needed. Many post offices have self-serve areas ..., The Size of the Envelope. Since manila envelopes are larger than standard envelopes, mailing one requires more than one stamp. A letter is a minimum of three and a half inches by five inches and a maximum six and one eighth inches by 11.5 inches. It’s not more than a quarter of an inch thick, with a maximum weight of three and a half ounces., 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 ..., If the size and weight of the 6×9 Bubble Mailer increase, then you need 1 additional Stamp for every single ounce. An additional Stamp for a single ounce will be priced at $0.24. For a 6×9 Bubble Mailer with a weight of 3 oz, you will have to give $0.63+$0.24+$0.24=$1.11 because you have to use 1 Forever Stamps and two additional Stamps worth ..., We would like to show you a description here but the site won't allow us., To mail a manila envelope, put the contents inside, seal it tightly, write the receiver’s address on the front, put the right postage stamps on it, and drop it off at the post office or a mailbox for outgoing mail. Learn how many stamps you need for a manila envelope with our comprehensive guide. Ensure your mail reaches its destination ..., How many Stamps for a Manila Envelope. June 24, 2023 by Isabella. Manila Envelopes When you need to send something that delivers an elegant or professional touch, opt for manila plain window envelopes. Available in numerous quantities, these essential office supplies are ideal for sending letters, statements, invoices, or any number of other ..., Our range of stamp options will suit every need - we can even customise it!, Aug 5, 2016 · 2. Use tape to reinforce, not close. You can use tape to reinforce the seams of the Flat Rate Envelope, but the amount of tape being used should not encase the envelope! 3. Flat refers to price, not shape. With Flat Rate Envelopes, bulges and thickness may not matter. Flat Rate Envelopes are best suited for documents, but if you choose to send ..., By Staff Writer Last Updated November 27, 2023. When it comes to mailing items, the size of the envelope or package is an important factor in determining the cost …, Should your 9×12 envelope end up weighing more than 1 ounce, you'll need more stamps, and the number of stamps you'll need depends on the total weight. You'll need to pay $0.20 per extra ounce. So, if you're mailing a package that weighs 4.3 ounces, it'll cost $1.80 — four First Class stamps. If you're unsure about costs, you can ..., 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 ..., 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., First-Class Mail Letters . Price paid on a per ounce basis - based on the First-Class Mail stamp price. Maximum Weight: 3.5 ounces - Additional ounces above one ounce have a separate per ounce price. Size Requirements: Minimum Size: 3½ inches by 5 inches. Maximum Size: 6⅛ inches by 11½ inches.