Important information about connecting to Stamps.com!
The Payment Card Industry (PCI) Security Standards Council, a coalition of credit card payment processors such AmEx, Visa and Mastercard, has updated their protocols for transmitting secure credit card transactions. As of June 30, companies will no longer be able to transmit credit card data using the older Transport Layer Security protocol TLS 1.0. In order to remain PCI compliant, only TLS 1.1 and TLS 1.2 will be allowed starting July 1, 2018.

Older Operating Systems Can No Longer Login to Stamps.com
Due to this TLS requirement, older operating systems and browsers will not be able to connect to Stamps.com after June 30, 2018. The following operating systems and browsers DO NOT have native support for TLS 1.1/1.2:
• Microsoft Windows Vista
• Microsoft Windows XP
• Microsoft Windows 2003
• MacOS 10.8 and below
• Internet Explorer versions 10 and below
• Mozilla Firefox versions 26 and below
• Google Chrome versions 29 and below
• Apple Safari versions 6 and below
In order to login to Stamps.com, please update to a supported operating system and internet browser on or before June 30, 2018.
Windows 7 User Verification: Some Windows 7 users may not have modern versions of TLS enabled by default. Stamps.com Software utlilizes specific Internet Explorer settings to make a connection to our server. If you are using Windows 7, you will need to check/update your TLS settings within Internet Explorer. To check or update your TLS settings, open the Internet Explorer browser, then click on the “Settings” gear icon and select “Internet Properties”. In the new window, select the Advanced tab, and make sure the boxes next to “Use TLS 1.1” and “Use TLS 1.2” are checked.Learn more info on how to check your TLS settings for Windows 7.

Stamps.com Online Customers: All of your account information will be available after updating your operating system and browser. Stamps.com Online updates itself automatically, and is accessible from any modern internet browser.
Stamps.com Software Customers: When you update your operating system and reinstall Stamps.com PC Software, most of your information will move to your account except for your address book. Before you update to a new Operating System, you MUST export your existing address book, keep the file handy, and then import it after you update.
What do I do if I cannot update Operating Systems?
If you are unable to update to a supported operating system, the latest version of the Stamps.com Software includes enhancements that may help you avoid a service interruption. To download the latest version, go to www.stamps.com/download.

Jan 21, 2018 Update: Stamps.com has launched a new International Flat service. Get more info on how to ship merchandise with International Flats.
Merchandise No Longer Allowed in First Class Mail International Flats
If you ship merchandise abroad using USPS First Class Mail International Flats, there’s a new rule going into effect soon that you need to know about. Effective Sunday, January 21, 2018, First Class Mail International Large Envelope/Flat service for merchandise will NO LONGER be available from the USPS. First Class Mail International Flats will only be approved for use when sending documents. This change is occurring to comply with Universal Postal Union requirements.
Here are some examples of what USPS considers a document (still OK to ship using First Class Mail International Flats):
- Audit and business records
- Personal correspondence
- Circulars
- Pamphlets
- Advertisements
- Written instruments not intended to be resold
- Money orders, checks, and similar items that cannot be negotiated or converted into cash without forgery.
Here are examples of items that will NO LONGER be allowed to be shipped as First Class Mail International Flats, effective Jan. 21, 2018:
- CDs, DVDs, flash drives, video and cassette tapes, and other digital and electronic storage media (regardless of whether they are blank or contain electronic documents or other prerecorded media)
- Artwork
- Collector or antique document items
- Books
- Periodicals
- Printed music
- Printed educational or test material
- Player piano rolls
- Commercial photographs, blueprints and engineering drawings
- Film and negatives
- X-rays
- Separation negatives
These goods are dutiable and must be must be shipped using First Class Package International Service. Once this change goes into effect, shippers will need to include Customs Forms and the recipient could pay a duty or tax to receive the product.
Cost Savings Using First Class Mail International Flats
Moving from First Class Mail International Flats to First Class Package International Service will have a big impact on shippers. For example, here’s a cost comparison for items going to Canada:
Shipping Rates to Canada (as of Jan 21, 2018) First Class International Cost Comparison | |||
Weight (oz.) | First Class Mail International Flats(goods NOT allowed) | First Class Package International Service (goods allowed) |
Cost Increase to move to First Class Package International Service |
1 | $2.29 | $9.50 | +$7.21 |
2 | $2.50 | $9.50 | +$7.00 |
3 | $2.71 | $9.50 | +$6.79 |
4 | $2.91 | $9.50 |
+$6.59 |
5 | $3.12 | $9.50 |
+$6.38 |
6 | $3.33 | $9.50 |
+$6.17 |
7 | $3.54 | $9.50 | +$5.96 |
8 | $3.75 | $9.50 |
+$5.75 |
12 | $4.79 | $15.20 |
+$10.41 |
16 – 1 lb. | $5.83 | $15.20 | +$9.37 |
20 | $6.87 | $15.20 |
+$8.33 |
24 | $7.91 | $15.20 |
+$7.29 |
28 | $8.95 | $15.20 | +$6.25 |
32 – 2 lbs. | $9.99 | $15.20 |
+$5.21 |
36 | $11.03 | $23.99 |
+$12.96 |
40 | $12.08 | $23.99 |
+$11.91 |
44 | $13.12 | $23.99 |
+$10.87 |
48 – 3 lbs. | $14.16 | $23.99 |
+$9.83 |
52 | $15.20 | $35.39 |
+$20.19 |
56 | $16.24 | $35.39 |
+$19.15 |
60 | $17.28 | $35.39 |
+$18.11 |
64 – 4 lbs. | $18.32 | $35.39 |
+$17.07 |
Stamps.com Introduces Global Advantage Program
Stamps.com has introduced the Global Advantage Program, a new international service that lets you keep the cost benefits of shipping merchandise with First-Class Mail International Flats.
The Global Advantage Program includes these great benefits:
- Allows you to ship merchandise using a service similar to First Class International Flats
- Does not require Customs Forms
- Plus much more!
To learn more and to have the Global Advantage Program activated to your account, please contact your Stamps.com Account Manager or call 1-855-889-7867 today!
Don’t worry about IMI compliance with Stamps.com. Learn more

Did you know that your Shopify store can easily connect to your Stamps.com account? Stamps.com makes it simple to import Shopify orders, print domestic and international shipping labels, and much more.
About Shopify
Shopify is an e-commerce platform that supports more than 100,000 online stores that sell over $4 billion in products in 100 different countries. With over 100+ professional themes and a full-featured Content Management system, creating the store of your dreams has never been easier. In addition to customization features, Shopify offers unlimited web hosting worldwide on an existing domain or a free myshopify.com podcast. Shopify doesn’t stop at website management—it also offers point of sale functionality along with full e-commerce reporting and order management.
How to Connect Your Shopify Store to Stamps.com
- Select the Orders Tab and click the Settings icon.
- In the Orders Setting Window select the Stores tab and click Add.
- The Stores Connect window will open. Select Shopify
- Enter your Shopify Domain, then Click Connect.
- Log in to Shopify and Visit the Shopify App Store
- Select Stamps.com and click Get
With the Stamps.com integration, Shopify customers can batch print shipping labels for all USPS mail classes, and automatically import orders. Once the USPS label is printed, the order status details such as the USPS tracking number, shipping date, and mail class are automatically posted to your Shopify account. Shopify customers also get access to additional Stamps.com features such as hidden postage, discounts on USPS postage rates and insurance and return shipping labels.
If you ship merchandise to international addresses and your product is thin (between 1/4″ and 3/4″ thick), then you should be taking advantage of Stamps.com’s Global Advantage Program! The program utilizes the USPS delivery network and allows online retailers to ship merchandise to an international address using a Large Envelope (Flat) mailpiece.
How Does it Work?
With the Global Advantage Program, mailpieces will travel to a Postal Processing Facility in the U.S. first where Customs Forms will be applied along with a new label containing the international destination address. Then mailpieces are consolidated by country and sent on to their international destination.

Benefits of Global Advantage Program:
- Ship merchandise in the cost efficient Large Envelope (Flat) mailpiece to international destinations
- Incredible cost savings – save up to 49% compared to First Class Package International Service
- Customs Forms will be sent electronically – no more forms to print
- Get better visibility with more tracking events
Save Up to 49% Compared to First Class Package International Service
This new International Large Envelope (Flat) service can provide huge cost savings compared to First Class Package International Service. Savings can be over $8.00 per Large Envelope (Flat), depending on weight and country destination!
First Class Package International Service | Stamps.com International Flats | ||
Weight | Zone 1 Canada | Zone 1 Canada | Savings with Stamps.com International Flats |
1 | $9.98 | $6.99 | $2.99 |
2 | $9.98 | $7.20 | $2.78 |
3 | $9.98 | $7.41 | $2.57 |
4 | $9.98 | $7.61 | $2.37 |
5 | $9.98 | $7.82 | $2.16 |
6 | $9.98 | $8.03 | $1.95 |
7 | $9.98 | $8.24 | $1.74 |
8 | $9.98 | $8.45 | $1.53 |
12 | $16.39 | $9.49 | $6.90 |
16 – 1 lb. | $16.39 | $10.53 | $5.86 |
20 | $16.39 | $11.57 | $4.82 |
24 | $16.39 | $12.61 | $3.78 |
28 | $16.39 | $13.65 | $2.74 |
32 – 2 lb. | $16.39 | $14.69 | $1.70 |
36 | $24.94 | $15.73 | $9.21 |
40 | $24.94 | $16.78 | $8.16 |
44 | $24.94 | $17.82 | $7.12 |
48 – 3 lb. | $24.94 | $18.86 | $6.08 |
52 | $37.05 | $19.90 | $17.15 |
56 | $37.05 | $20.94 | $16.11 |
60 | $37.05 | $21.98 | $15.07 |
64 – 4 lb. | $37.05 | $23.02 | $14.03 |
Rates as of January 27, 2019 |
First Class Package International Service | Stamps.com International Flats | ||
Weight (oz) | Zone 2 Mexico | Zone 2 Mexico | Savings with Stamps.com International Flats |
1 | $11.64 | $6.99 | $4.65 |
2 | $11.64 | $7.67 | $3.97 |
3 | $11.64 | $8.34 | $3.30 |
4 | $11.64 | $9.02 | $2.62 |
5 | $11.64 | $9.70 | $1.94 |
6 | $11.64 | $10.37 | $1.27 |
7 | $11.64 | $11.05 | $0.59 |
8 | $11.64 | $11.73 | -$0.09 |
12 | $20.43 | $13.18 | $7.25 |
16 – 1 lb. | $20.43 | $14.64 | $5.79 |
20 | $20.43 | $16.10 | $4.33 |
24 | $20.43 | $17.56 | $2.87 |
28 | $20.43 | $19.01 | $1.42 |
32 – 2 lb. | $20.43 | $20.47 | -$0.04 |
36 | $31.35 | $21.93 | $9.42 |
40 | $31.35 | $23.39 | $7.96 |
44 | $31.35 | $24.84 | $6.51 |
48 – 3 lb. | $31.35 | $26.30 | $5.05 |
52 | $45.13 | $27.76 | $17.37 |
56 | $45.13 | $29.22 | $15.91 |
60 | $45.13 | $30.67 | $14.46 |
64 – 4 lb. | $45.13 | $32.13 | $13.00 |
Rates as of January 27, 2019 |
First Class Package International Service | Stamps.com International Flats | ||
Weight (oz) | Zone 3 Australia/Asia | Zone 3 Australia/Asia | Savings with Stamps.com International Flats |
1 | $13.54 | $6.99 | $6.55 |
2 | $13.54 | $7.93 | $5.61 |
3 | $13.54 | $8.86 | $4.68 |
4 | $13.54 | $9.80 | $3.74 |
5 | $13.54 | $10.74 | $2.80 |
6 | $13.54 | $11.67 | $1.87 |
7 | $13.54 | $12.61 | $0.93 |
8 | $13.54 | $13.55 | -$0.01 |
12 | $22.33 | $15.42 | $6.91 |
16 – 1 lb. | $22.33 | $17.30 | $5.03 |
20 | $22.33 | $19.17 | $3.16 |
24 | $22.33 | $21.04 | $1.29 |
28 | $22.33 | $22.92 | -$0.59 |
32 – 2 lb. | $22.33 | $24.79 | -$2.46 |
36 | $33.25 | $26.67 | $6.58 |
40 | $33.25 | $28.54 | $4.71 |
44 | $33.25 | $30.41 | $2.84 |
48 – 3 lb. | $33.25 | $32.29 | $0.96 |
52 | $50.11 | $34.16 | $15.95 |
56 | $50.11 | $36.03 | $14.08 |
60 | $50.11 | $37.91 | $12.20 |
64 – 4 lb. | $50.11 | $39.78 | $10.33 |
Rates as of January 27, 2019 |
First Class Package International Service | Stamps.com International Flats | ||
Weight (oz) | Zone 4 Russia/Eastern Europe | Zone 4 Russia/Eastern Europe | Savings with Stamps.com International Flats |
1 | $13.54 | $6.99 | $6.55 |
2 | $13.54 | $7.93 | $5.61 |
3 | $13.54 | $8.86 | $4.68 |
4 | $13.54 | $9.80 | $3.74 |
5 | $13.54 | $10.74 | $2.80 |
6 | $13.54 | $11.67 | $1.87 |
7 | $13.54 | $12.61 | $0.93 |
8 | $13.54 | $13.55 | -$0.01 |
12 | $22.80 | $15.42 | $7.38 |
16 – 1 lb. | $22.80 | $17.30 | $5.50 |
20 | $22.80 | $19.17 | $3.63 |
24 | $22.80 | $21.04 | $1.76 |
28 | $22.80 | $22.92 | -$0.12 |
32 – 2 lb. | $22.80 | $24.79 | -$1.99 |
36 | $34.91 | $26.67 | $8.24 |
40 | $34.91 | $28.54 | $6.37 |
44 | $34.91 | $30.41 | $4.50 |
48 – 3 lb. | $34.91 | $32.29 | $2.62 |
52 | $56.53 | $34.16 | $22.37 |
56 | $56.53 | $36.03 | $20.50 |
60 | $56.53 | $37.91 | $18.62 |
64 – 4 lb. | $56.53 | $39.78 | $16.75 |
Rates as of January 27, 2019 |
First Class Package International Service | Stamps.com International Flats | ||
Weight (oz) | Zone 5 – UK/Western Europe | Zone 5 – UK/Western Europe | Savings with Stamps.com International Flats |
1 | $13.54 | $6.99 | $6.55 |
2 | $13.54 | $7.93 | $5.61 |
3 | $13.54 | $8.86 | $4.68 |
4 | $13.54 | $9.80 | $3.74 |
5 | $13.54 | $10.74 | $2.80 |
6 | $13.54 | $11.67 | $1.87 |
7 | $13.54 | $12.61 | $0.93 |
8 | $13.54 | $13.55 | -$0.01 |
12 | $22.80 | $15.42 | $7.38 |
16 – 1 lb. | $22.80 | $17.30 | $5.50 |
20 | $22.80 | $19.17 | $3.63 |
24 | $22.80 | $21.04 | $1.76 |
28 | $22.80 | $22.92 | -$0.12 |
32 – 2 lb. | $22.80 | $24.79 | -$1.99 |
36 | $35.63 | $26.67 | $8.96 |
40 | $35.63 | $28.54 | $7.09 |
44 | $35.63 | $30.41 | $5.22 |
48 – 3 lb. | $35.63 | $32.29 | $3.34 |
52 | $57.95 | $34.16 | $23.79 |
56 | $57.95 | $36.03 | $21.92 |
60 | $57.95 | $37.91 | $20.04 |
64 – 4 lb. | $57.95 | $39.78 | $18.17 |
Rates as of January 27, 2019 |
First Class Package International Service | Stamps.com International Flats | ||
Weight (oz) | Zone 6 Southeast Asia/India | Zone 6 Southeast Asia/India | Savings with Stamps.com International Flats |
1 | $13.78 | $6.99 | $6.79 |
2 | $13.78 | $7.88 | $5.90 |
3 | $13.78 | $8.76 | $5.02 |
4 | $13.78 | $9.64 | $4.14 |
5 | $13.78 | $10.53 | $3.25 |
6 | $13.78 | $11.41 | $2.37 |
7 | $13.78 | $12.30 | $1.48 |
8 | $13.78 | $13.18 | $0.60 |
12 | $23.28 | $15.01 | $8.27 |
16 – 1 lb. | $23.28 | $16.83 | $6.45 |
20 | $23.28 | $18.65 | $5.64 |
24 | $23.28 | $20.47 | $2.81 |
28 | $23.28 | $22.29 | $0.99 |
32 – 2 lb. | $23.28 | $24.11 | -$0.83 |
36 | $36.81 | $25.94 | $10.87 |
40 | $36.81 | $27.76 | $9.05 |
44 | $36.81 | $29.58 | $7.23 |
48 – 3 lb. | $36.81 | $31.40 | $5.41 |
52 | $59.85 | $33.22 | $26.63 |
56 | $59.85 | $35.05 | $24.80 |
60 | $59.85 | $36.87 | $22.98 |
64 – 4 lb. | $59.85 | $38.69 | $21.16 |
Rates as of January 27, 2019 |
First Class Package International Service | Stamps.com International Flats | ||
Weight (oz) | Zone 7 Africa | Zone 7 Africa | Savings with Stamps.com International Flats |
1 | $13.06 | $6.99 | $6.07 |
2 | $13.06 | $7.88 | $5.18 |
3 | $13.06 | $8.76 | $4.30 |
4 | $13.06 | $9.64 | $3.42 |
5 | $13.06 | $10.53 | $2.53 |
6 | $13.06 | $11.41 | $1.65 |
7 | $13.06 | $12.30 | $0.76 |
8 | $13.06 | $13.18 | -$0.12 |
12 | $22.09 | $15.01 | $7.08 |
16 – 1 lb. | $22.09 | $16.83 | $5.26 |
20 | $22.09 | $18.65 | $3.44 |
24 | $22.09 | $20.47 | $1.62 |
28 | $22.09 | $22.29 | -$0.20 |
32 – 2 lb. | $22.09 | $24.11 | -$2.02 |
36 | $35.15 | $25.94 | $9.12 |
40 | $35.15 | $27.76 | $7.39 |
44 | $35.15 | $29.58 | $5.57 |
48 – 3 lb. | $35.15 | $31.40 | $3.75 |
52 | $56.53 | $33.22 | $23.31 |
56 | $56.53 | $35.05 | $21.48 |
60 | $56.53 | $36.87 | $19.66 |
64 – 4 lb. | $56.53 | $38.69 | $17.84 |
Rates as of January 27, 2019 |
First Class Package International Service | Stamps.com International Flats | ||
Weight (oz) | Zone 8 Middle East | Zone 8 Middle East | Savings with Stamps.com International Flats |
1 | $12.83 | $6.99 | $5.84 |
2 | $12.83 | $7.88 | $4.95 |
3 | $12.83 | $8.76 | $4.07 |
4 | $12.83 | $9.64 | $3.19 |
5 | $12.83 | $10.53 | $2.30 |
6 | $12.83 | $11.41 | $1.42 |
7 | $12.83 | $12.30 | $0.53 |
8 | $12.83 | $13.18 | -$0.35 |
12 | $21.61 | $15.01 | $6.60 |
16 – 1 lb. | $21.61 | $16.83 | $4.78 |
20 | $21.61 | $18.65 | $2.96 |
24 | $21.61 | $20.47 | $1.14 |
28 | $21.61 | $22.29 | -$0.68 |
32 – 2 lb. | $21.61 | $24.11 | -$2.50 |
36 | $33.01 | $25.94 | $7.07 |
40 | $33.01 | $27.76 | $5.25 |
44 | $33.01 | $29.58 | $3.43 |
48 – 3 lb. | $33.01 | $31.40 | $1.61 |
52 | $52.49 | $33.22 | $19.27 |
56 | $52.49 | $35.05 | $17.44 |
60 | $52.49 | $36.87 | $15.62 |
64 – 4 lb. | $52.49 | $38.69 | $13.80 |
Rates as of January 27, 2019 |
First Class Package International Service | Stamps.com International Flats | ||
Weight (oz) | Zone 9 South America/ Caribbean | Zone 9 South America/ Caribbean | Savings with Stamps.com International Flats |
1 | $13.78 | $6.99 | $6.79 |
2 | $13.78 | $7.88 | $5.90 |
3 | $13.78 | $8.76 | $5.02 |
4 | $13.78 | $9.64 | $4.14 |
5 | $13.78 | $10.53 | $3.25 |
6 | $13.78 | $11.41 | $2.37 |
7 | $13.78 | $12.30 | $1.48 |
8 | $13.78 | $13.18 | $0.60 |
12 | $23.28 | $15.01 | $8.27 |
16 – 1 lb. | $23.28 | $16.83 | $6.45 |
20 | $23.28 | $18.65 | $4.63 |
24 | $23.28 | $20.47 | $2.81 |
28 | $23.28 | $22.29 | $0.99 |
32 – 2 lb. | $23.28 | $24.11 | -$0.83 |
36 | $36.58 | $25.94 | $10.64 |
40 | $36.58 | $27.76 | $8.82 |
44 | $36.58 | $29.58 | $7.00 |
48 – 3 lb. | $36.58 | $31.40 | $5.18 |
52 | $59.38 | $33.22 | $26.16 |
56 | $59.38 | $35.05 | $24.33 |
60 | $59.38 | $36.87 | $22.51 |
64 – 4 lb. | $59.38 | $38.69 | $20.69 |
Rates as of January 27, 2019 |
Stamps.com customers can access the service by selecting “First-Class Mail International Large Envelope/Flats” as the mail service inside the platform on a global delivery address.