Best Booklet Mailing Envelopes of 2026

"I've been buying these envelopes for my brother every year, and I'm always impressed by their great quality and durability. He never has to worry about them breaking or being the wrong product for his needs. They're a reliable choice for secure mailing."

"As a business owner, I rely on these 9 x 12 self-seal brown kraft envelopes to keep my documents safe and presentable. The sturdy 28lb weight and strong self-sealing flap make mailing so much easier, while the professional look leaves a positive impression on clients. The ample size is perfect for larger paperwork, and the bulk pack saves both time and money. Plus, knowing they're recyclable fits well with my eco-friendly values."

"These manila envelopes are of good quality and work perfectly for our needs. The adhesive is strong, so we don't have to mess with licking, and they always arrive quickly and in perfect condition. We'll definitely order again!"

"I found the envelopes to be of excellent quality and visually appealing, making them ideal for my Christmas cards."

"These envelopes were just what I was searching for and completely satisfied my needs."

"I've been using these envelopes for my annual Christmas cards and occasional mailings. They're a bit better than what I used to get from Staples—feed through my HP printer almost flawlessly, and the self-seal works even after a year in storage. They also make the contents discreet and secure, which is perfect for sending cards or even cash."

"As someone who makes handmade greeting cards, I finally found the envelope size I've needed. My cards fit perfectly, and the peel-and-seal feature is super convenient. They're sturdy and look great, so I'm really happy with these envelopes!"

"These are good quality envelopes at a reasonable price. I don't plan on buying envelopes at the post office anymore, because these are just what I need for my mailings."

"I needed envelopes for mailing a large batch of leaflets, and these were cost-effective and easy to use. I especially liked the self-sealing tabs, which made the process much quicker. Plus, they worked perfectly with my printer."

"I bought these to send out hundreds of Christmas cards, but the self-seal didn't hold up after sealing a few dozen. The flaps became wavy and didn't adhere well, and when I opened them, the glue left sticky strings that caught on the contents. Unfortunately, I had to return them because of these issues."

"I was happy with the quality and size, especially for the price. These envelopes are a great deal compared to what I found at local craft stores, and I still have plenty left for future use!"

"I use these envelopes to mail out photos for our real estate listings. The clear window perfectly frames the images and the envelopes are sturdy enough for mailing, but not overly thick. I found the price reasonable, especially for the pack size, and none of mine had any streaks."

"Whenever I send headshots to casting directors, these are my go-to envelopes. The window lets them see my photo immediately and makes my mailings stand out. I just wish there was an 8.5x11 option, since the 9x12 is a bit big for 8x10 prints, but overall, they're a great value."

"These envelopes are ideal for my sports photo sessions. They display the photos beautifully and look very professional when I hand them out to families. They're perfect for presenting images and making a good impression."

"I absolutely love the quality and look of these candy pink envelopes. They're not only sturdy and feminine, but also hold a surprising amount of paper. I use them for storing travel documents and they're easy to label. Having tried several styles from this brand, I’m consistently delighted with the great quality."

"I needed something eye-catching for my marketing mailers and these envelopes made a fantastic impression. The striking red color really stands out in the mail, and although they're not the thickest, they look great once filled. Sealing them is easy and I’m happy enough to order more for promotional materials."

"I was searching for envelopes to mail certificates in a way that would reflect my upscale brand. These envelopes fit the bill perfectly—they can hold multiple documents without exceeding standard postage and make my mailings look professional. I’m happy with how they represent my business."

"I found these envelopes to be the ideal size for my National Geographic Atlas. They're also sturdy and well-built, which, combined with the affordable price, makes them a great purchase."

"The quality of these large envelopes exceeded my expectations. While the price was a little more than I anticipated, the durability and construction definitely make them worthwhile."

"These envelopes are exactly what I needed. This is my second time purchasing them, and I’ve been satisfied each time."

"I needed a larger envelope than 6x9, but didn’t want anything as big as 9x12. These 7x10 envelopes fit my needs perfectly. My only complaint is I wish the pack included more—we used up the 50 quickly."

"I was searching for envelopes for my Tupperware catalogs, and these turned out to be a perfect fit. I’ll definitely order again because of the great sizing and quality."

"Unfortunately, these envelopes were just a bit too small for my 7x10-inch calendars—there’s no extra room at all, so they don’t fit. I’ll have to find another use for them and probably go for 9x12 envelopes next time."

"I ordered these for Christmas certificates, and the deep red color is bright and beautiful. The envelopes are thick, sturdy, and arrived in great shape."

"As an artist, I use these to include bios with purchases. The classic deep blue looks gorgeous with my materials, and the envelopes always arrive on time and in perfect condition. I keep coming back for more because they're well-priced and reliable."

"These envelopes are well-constructed and fit certificates exactly as needed. The thickness and overall quality are impressive, and I would highly recommend them."