#10 Security Self-Seal Standard Size Business Envelopes

By: ‎Spark Ink

Make sure your business mailings are secure with these Envelopes Self Seal - Security Envelopes #10. These standard size business envelopes measure 4-1/8 x 9-1/2 inches and come in a 500 count package. These envelopes are windowless, blank, and made of quality 24 lb paper. Adhesion, material quality, overall satisfaction, and value for money make these the best Business Mailing Envelopes on the market. Plus, the self-seal adhesive really sticks for long and the windowless design allows for easy address printing or labels for mass mailing. And, they are made of eco-friendly material, making them safe for the environment.

Key Features:

This pack of 10 standard size business envelopes is ideal for securely sending important documents. The heavy 24 lb paper weight provides extra security and the extended security feature ensures that your documents remain confidential. Plus, these envelopes have no window, for additional privacy.
95
B2B Rating
218 reviews

Review rating details

Value for money
94
Size
90
Packaging
86
Overall satisfaction
95
Material quality
94
Adhesion
93

Pros and Cons

Pros
  • Comes with self-seal adhesive that really sticks for long
  • Windowless blank design allows for easy address printing or labels for mass mailing
  • Made of eco-friendly material that makes it safe for the environment
Cons
  • The security tint may not be dark enough

Details of #10 Security Self-Seal Standard Size Business Envelopes

  • Customer Reviews: 4.7/5 stars of 1,051 ratings
  • Manufacturer Part Number: ‎500 Count - Window
  • Size: ‎4 1/8” x 9 1/2”
  • Manufacturer: ‎Spark Ink
  • Color: ‎White
  • Shape: ‎Rectangular
  • Date First Available: July 5, 2021
  • Brand: ‎Spark Ink
  • Best Sellers Rank: #66,472 in Office Products #246 in Business Mailing Envelopes
  • Closure: ‎Self-Seal
  • Number of Items: ‎500
  • ASIN: B095KLTH7S
  • Material Type: ‎Paper
  • Package Dimensions: ‎11.18 x 10.04 x 4.88 inches
  • Item Weight: ‎6.25 pounds

Comments

Catherine Nochella: Was pleasantly surprised when I received the envelopes as they are great quality and seal very well.

United States on Feb 21, 2023

Sandra: Bought these for small business & personal use. I thought the price was good for an envelope I don’t have to lick and we use a lot of envelopes. They are heavy duty. No peeking through these. The only down side, which I actually found not to be a big deal, is the glue that seals the envelope likes to stick to the strip that covers it. I’ve used a few and found that by tearing the strip off slowly and carefully the glue strip stays on the envelope. The glue is a pretty thin strip, but it sticks tight. Was not afraid at all that the flap would come opened. I thought I had read one review that didn’t like that the glue strip didn’t run the whole length of the flap. I’ve never had an envelope that did. So far I am satisfied & would purchase again. Will update if I have more issues with the glue sticking to the pull strip as I get deeper into the box.

United States on Jan 13, 2023

ChelleChelle: I received my envelopes today, and I was a bit disappointed when I opened the box. While the majority of the envelopes were packed in nicely, a number of them at one end were crushed, folded and/or torn. Out of the 500 packed in this box, I had to throw away 10-12 damaged envelopes.
Now, that being said.. I've had a few douments waiting to be mailed so I loaded up my laser printer with my new envelopes, hit print and hoped for the best. Flawless. The paper didn't get caught, the glue didn't melt, and my text came out perfectly. Thought I'd give my HP ink jet a try as well, even though I rarely use it for envelopes, and the print was crisp and clean with no smudging.
The glue holds and it holds well. I realized I'd forgotten to include a cover letter in one of my mailings so I needed retrieve my document from the envelope I had sealed it in and correct my mistake. Without a letter opener, you really have to rip apart the tamper resistant flap to get it open.
Over all, I am happy with my purchase and will order again.

United States on May 28, 2021

Nese Vee: It seems that products I've ordered and used pre-pandemic are just not the same quality post-pandemic. That experience isn't limited to envelopes but ranges from sunglasses to clothing to paper. Forget all the (understandable) issues creating delays with product receipt. I'm talking about the actual product. I typically read at least half a dozen written reviews by RECENT purchasers whenever I'm eyeballing a new product. Unfortunately, even a review written only month prior to my contemplated purchase isn't enough these days to ensure that I actually receive the same quality. These envelopes, however, are the exception.

The adhesion is quality and they are, indeed, NOT see-through. I'm a small business (as in one-person operation) and my need to snail-mail diminishes daily, however, I was sick of running out of envelopes only to buy more and discover I had gotten CRAPPOLA. So I ordered these, not appreciating that 500 is a LOT of envelopes and requires a place to store excess. That is my ONLY complaint, and that has nothing to do with the quality of the product.

United States on Sep 23, 2020

Rusty: I have only used about 20 envelopes of this lot so far. It takes me about a year to use 500 envelopes. No serious disappointments yet in the first 20. The self-seal adhesive is a thin line but is amazingly strong. I only did a quick random inspection upon delivery to evaluate integrity of about 15 of them and in that inspection, the other glued seams and flaps appear well placed and securely glued. These don't feel exactly like 24 pound paper but they do certainly feel thicker than 20 pound printer paper. I did discover that when wetted slightly by a light rain during the time it took to transfer an envelope from hand to mailbox, the security print showed through. Uh-oh. I thought this was a reason to ding down a star in the review Nope. To test, I wetted a couple of Columbian (Mead) #10 Grip-Seal Security envelopes and the tint showed through on them just as much as these Spark-Ink branded envelopes. I only gave 4 stars because I just don't like to give 5 stars to anything. It just seems facetious. There is only one thing--that I'm not entirely sold on--and that is the "security" perforation scheme on the flap that is designed to show that the envelope has been tampered with. I...

United States on Mar 01, 2020

#10 Security Self-Seal Standard Size Business Envelopes #10 Security Tinted Self-Seal Envelopes - No Peeking Allowed! #10 White Letter Business Envelopes with 500 Self-Seal Security Mailing Closures
#10 Security Self-Seal Standard Size Business Envelopes #10 Security Tinted Self-Seal Envelopes - No Peeking Allowed! #10 White Letter Business Envelopes with 500 Self-Seal Security Mailing Closures
B2B Rating
95
98
97
Sale off $13 OFF $6 OFF $8 OFF
Total Reviews 218 reviews 2 reviews 629 reviews
Customer Reviews 4.7/5 stars of 1,051 ratings 4.8/5 stars of 32,747 ratings 4.7/5 stars of 6,612 ratings
Manufacturer Part Number ‎500 Count - Window ‎34100 ‎#10 Security Envelopes Windowless
Size ‎4 1/8” x 9 1/2” ‎100 Ct. ‎4.125-x-9.5-inch Inches
Manufacturer ‎Spark Ink ‎Aimoh ‎Splendoress
Color ‎White ‎White ‎White Wove
Shape ‎Rectangular ‎Rectangular ‎Rectangular
Date First Available July 5, 2021 April 6, 2016 January 3, 2018
Brand ‎Spark Ink ‎Aimoh ‎Splendoress
Best Sellers Rank #66,472 in Office Products #246 in Business Mailing Envelopes #66 in Office Products #2 in Business Mailing Envelopes #150 in Office Products #3 in Business Mailing Envelopes
Closure ‎Self-Seal ‎Self-Seal ‎Peel & Seal - Self Seal
Number of Items ‎500 ‎100 ‎500
ASIN B095KLTH7S B01D0OANU4 B078S5ZL5D
Material Type ‎Paper ‎Paper ‎Paper
Package Dimensions ‎11.18 x 10.04 x 4.88 inches
Item Weight ‎6.25 pounds ‎1.39 pounds ‎6.06 pounds
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