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Custom First-Class Flat Envelopes

Give your mailings a touch of importance and urgency by stocking up on first-class envelopes. Start from scratch or use one of our ready-made templates today!

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First-Class Envelopes

Looking for an affordable way to send letters or lightweight packages? First-class mail provides an excellent value in terms of personal and professional mailings, guaranteeing that your mail will be delivered anywhere across the country in one to three days. To take full advantage of first-class mail services, you will need to have the appropriate envelopes on hand. Envelopes.com proudly offers a wide selection of first-class envelopes in a wide range of sizes. Catalog envelopes, as they are also known, are easily recognizable due to their green triangle border pattern on both sides and typically used to send flat, bulky items or several small items all at once. First-class envelopes are perfect for businesses, because the professional design incentivizes addressees to open brochures, catalogs, letters, and manuscripts more quickly than they might open a standard envelope. Each envelope features a center seam construction and a self-adhesive flap on the short side, which helps to keep the contents from falling out after opening. No matter what your particular set of sending needs may be, we have you covered. First-class flat envelopes come in a variety of sizes: • 6 x 9 envelopes (open end) • 7 ½ x 10 ½ envelopes (open end) • 9 x 12 envelopes (open end) • 10 x 13 envelopes (open end) • 10 x 15 envelopes (open end) • 11 ½ x 14 ½ envelopes (open end) Design your own envelopes with our easy-to-use design tools We make it easy to create one-of-a-kind envelopes that add the spark back to everyday correspondences and important mailings. Make the most of our high-quality design and printing services! We offer a wide variety of ready-made templates that you can personalize by uploading your own artwork and changing the placement or style of fonts. If you have been looking for a cost-effective way to get your marketing message into the hands of your customers, you can add a logo to give your first-class flat envelopes more of a corporate appeal. Whether your artwork is already ready to go or you need to start from scratch, the online customization process is as simple and straightforward as can be! 1. Choose the template you would like to customize. 2. Click the “customize” button in the bottom right corner. 3. Use our online design tool to customize your envelopes. Need Recipient Addressing? Save yourself the headache and time of addressing your own first-class envelopes. Take full advantage of our recipient addressing services. You can create and save your address book with our easy-to-use address template or you can enter your address list line by line. You will be able to preview each and every address along the way. Which Paper Weight Should You Choose? Paper weight is measured in pounds (lbs.) and refers to the thickness or sturdiness of a sheet of paper. The higher the number, the thicker the paper or card stock. Please note, paper weight does not refer to the actual weight of a single piece of paper. Our first-class flat envelopes are currently available in 11 lb. to 80 lb., with or without peel and seal. With more than 40 years of experience, we understand how important it is to leave a lasting impression. That is precisely why we offer an assortment of first-class envelope colors and customization options for you to choose from. We are also here to help you every step of the way. If you have any questions about first-class mailings, feel free to chat online with one of our friendly customer service representatives for additional information or further assistance.

Free Shipping on Orders of 299 or More
* (1) Merchandise total must equal 299 or more before applicable taxes and ship to one address within the 48 contiguous United States. (2) MUST SELECT "STANDARD SHIPPING" as your shipping method BEFORE entering the code. (3) Enter the coupon code FREE299. Offer not valid for Alaska, Hawaii, United States Territories or International destinations. Offer is not redeemable on previous orders and cannot be combined with promotional coupon codes. Offer CAN be used in conjunction with Loyalty, Trade Pro and Non-Profit Discount Program. Offer not valid on phone orders. Terms of offer are subject to change at any time.
$5 OFF Orders Over $50
*Merchandise total must equal $50.00 or more before applicable taxes. To be eligible, customers must enter the coupon code TAKEFIVE at checkout. Offer is not redeemable on previous orders and cannot be combined with promotional coupon codes. Offer CANNOT be used in conjunction with Loyalty, Trade Pro and Non-Profit Discount Program. Offer not valid on phone orders. Terms of offer are subject to change at any time.
To get the discount:
* (1) Merchandise total must equal $299 or more before applicable taxes and ship to one address within the 48 contiguous United States. (2) MUST SELECT "STANDARD SHIPPING" as your shipping method BEFORE entering the code. (3) Enter the coupon code FREE299. Offer not valid for Alaska, Hawaii, United States Territories or International destinations. Offer is not redeemable on previous orders and cannot be combined with promotional coupon codes. Offer CAN be used in conjunction with Loyalty, Trade Pro and Non-Profit Discount Program. Offer not valid on phone orders. Terms of offer are subject to change at any time.
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To get the discount:
* (1) Merchandise total must equal $299 or more before applicable taxes and ship to one address within the 48 contiguous United States. (2) MUST SELECT "STANDARD SHIPPING" as your shipping method BEFORE entering the code. (3) Enter the coupon code FREE299. Offer not valid for Alaska, Hawaii, United States Territories or International destinations. Offer is not redeemable on previous orders and cannot be combined with promotional coupon codes. Offer CAN be used in conjunction with Loyalty, Trade Pro and Non-Profit Discount Program. Offer not valid on phone orders. Terms of offer are subject to change at any time.
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To get the discount:
This offer must be redeemed and orders placed by November 29, 2019. To be eligible, customers must enter the coupon code BF2019 at checkout. This offer CAN NOT be used in conjunction with FREE299, Trade Pro or Non-Profit Discount Program. Offer is NOT redeemable on previous orders and CAN NOT be applied to Sale/Clearance Items. This offer CAN NOT be combined with other promotional coupon codes. Terms of offer are subject to change at any time.
To get the discount:
This offer must be redeemed and orders placed on Dec. 2, 2019. To be eligible, customers must enter the coupon code CYBER2019 at checkout. This offer CAN NOT be used in conjunction with FREE299, Trade Pro or Non-Profit Discount Program. Offer is NOT redeemable on previous orders and CAN NOT be applied to Sale/Clearance Items. This offer CAN NOT be combined with other promotional coupon codes. Terms of offer are subject to change at any time.
To get the discount:
This offer must be redeemed and orders placed by Dec. 6, 2019 (11:59 PM EST). To be eligible, customers must enter the coupon code CYBERX19 at checkout. This offer CAN NOT be used in conjunction with FREE299, Trade Pro or Non-Profit Discount Program. Offer is NOT redeemable on previous orders and CAN NOT be applied to Sale/Clearance Items. This offer CAN NOT be combined with other promotional coupon codes. Terms of offer are subject to change at any time.
To get the discount:
This offer must be redeemed and orders placed by Dec. 9, 2019 (11:59 PM EST). To be eligible, customers must enter the coupon code GREEN19 at checkout. This offer CAN NOT be used in conjunction with FREE299, Trade Pro or Non-Profit Discount Program. Offer is NOT redeemable on previous orders and CAN NOT be applied to Sale/Clearance Items. This offer CAN NOT be combined with other promotional coupon codes. Terms of offer are subject to change at any time.
To get the discount:
This offer must be redeemed and orders placed by Dec. 17, 2019 (11:59 PM EST). To be eligible, customers must enter the coupon code CMR2019 at checkout. This offer CAN NOT be used in conjunction with FREE299, Trade Pro or Non-Profit Discount Program. Offer is NOT redeemable on previous orders and CAN NOT be applied to Sale/Clearance Items. This offer CAN NOT be combined with other promotional coupon codes. Terms of offer are subject to change at any time.
To get the discount:
This offer must be redeemed and orders placed by Dec. 31, 2019 (11:59 PM EST). To be eligible, customers must enter the coupon code BYE2019 at checkout. This offer CAN NOT be used in conjunction with FREE299, Trade Pro or Non-Profit Discount Program. Offer is NOT redeemable on previous orders and CAN NOT be applied to Sale/Clearance items or Holiday Clearance items. This offer CAN NOT be combined with other promotional coupon codes. Terms of offer are subject to change at any time. All Holiday Clearance prices are as marked - no code required.
Order Type Date of Order Approved (By 3PM EST) Production Method Shipping Method
Custom Printed Orders
December 10th Rush Standard
December 12th Rush Premium
December 17th Rush Next Day Air
Plain Orders December 21st Standard Standard
Limited Time! 15% Off Recipient Addressing.
Not ready to upload your address list? Order now and upload your list later! Use code EARLYBIRD15 at checkout. You will receive an email confirmation with instructions on how you can upload your list at any time. You can also access your order at any time from your account page.
* Offer valid October 24, 2017 through November 3, 2017 and cannot be combined with any other offer.
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Merchandise total must equal $250 or more before applicable taxes and order must be placed between 10/28/19 and 10/29/19. Offer is not redeemable on previous orders and cannot be combined with promotional coupon codes. Offer CANNOT be used in conjunction with Loyalty, Trade Pro and Non-Profit Discount Program. Offer not valid on phone orders. Terms of offer are subject to change at any time.

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