Customer reviews from Staples
Staples - Self Seal Security Tinted #9 Double Window Envelopes, 3 7/8" x 8 7/8", 500/Box - White
Average customer rating
4.4
(16 Reviews)
Rating breakdown 16 reviews
5 Stars
11
4 Stars
3
3 Stars
1
2 Stars
0
1 Star
1
92%of customers recommend this product.
(
12 out of
13)
Customer Reviews for Staples - Self Seal Security Tinted #9 Double Window Envelopes, 3 7/8" x 8 7/8", 500/Box - White
Customer Rating
5
Quality envelope
on October 31, 2025
Posted by: MomAlli
[This review was collected as part of a promotion.] These are nice envelopes. I love the adhesive instant seal, it makes sending mail a breeze. The size is your standard size with a nice window making it easy for business to display the address. The pack of 500 envelopes means we will never run out. I appreciate the small slice, which I imagine is to help to rip open the envelope.
I would recommend this to a friend!
Written by a customer while visiting Staples
Customer Rating
3
Nice envelope that does not improve on others
on October 31, 2025
Posted by: JenniferK
[This review was collected as part of a promotion.] The envelopes are sturdy with nice thickness and feel However I find the closure confusing and sloppy
The back of the envelopes have a perforated strip of paper on the back that lifts to reveal glue However it’s unclear if you’re supposed to just lift the flap and seal it or tear it off. In either case, on every envelope I have tried the envelope has partially torn near the perforation, which makes it not neat
I strongly prefer this to envelopes you have to lick or otherwise wet but I don’t think it improves on the other envelopes with an easy to remove wax paper strip
No, I would not recommend this to a friend.
Written by a customer while visiting Staples
Customer Rating
5
Perfect for office use
on October 31, 2025
Posted by: unwraplife
[This review was collected as part of a promotion.] I use these #9 3.875 X 8.875 White Envelopes for my home business. The paper is sturdy and durable to make it through the (sometimes aggressive!) USPS process. The address window is conveniently located and large enough that I don't have to be exactly precise in my folding!. The envelopes are easy to seal and stay sealed.
I would recommend this to a friend!
Written by a customer while visiting Staples
Customer Rating
5
Perfect
on November 1, 2025
Posted by: Leelah
[This review was collected as part of a promotion.] These #9 envelopes are excellent quality. The box includes a generous quantity, and the self-adhesive seal is very convenient—no need to lick or apply glue. The adhesive is strong and secure, ensuring the envelopes stay sealed once closed. I also appreciate that they’re not see-through and feature a double window, which makes mailing statements quick and efficient. Overall, a great value and highly reliable product.
I would recommend this to a friend!
Written by a customer while visiting Staples
Customer Rating
5
Outstanding quality all around
on October 31, 2025
Posted by: Jenn0830
[This review was collected as part of a promotion.] I absolutely love the #9 3.875 x 8.875 white envelopes. They couldn't be more perfect for my business. For starters, they have a nice professional look and feel to them. My favorite feature and what sets these envelopes apart from the rest, is the seal quality. They offer an instant seal by simply lifting the flap and closing the envelope. The seal is the strongest I've ever used. This alone is such a game changer for me. No more pulling off glue strips, using tape, or even worse, licking to seal. Ewww! Love that the envelopes offer even more security by featuring small perforation slits along the flap and security tinting inside. The perforations prevent from fully opening and you can't see through them at all. I also really appreciate the large quantity of envelopes per box. 500 is just the right amount for me. These envelopes are just perfect for my invoicing. They'll save me so much time and money and keep my clients information safe, which is always my number one priority. Highly recommend!
I would recommend this to a friend!
Written by a customer while visiting Staples
Customer Rating
5
Envelopes
on October 31, 2025
Posted by: jula1411
[This review was collected as part of a promotion.] These envelopes did exactly what they were supposed to do! They are great quality envelopes! The paper is sturdy, the adhesive seals well, and they arrived quickly. Perfect for my needs. The envelopes are well-made, reliable, and exactly as described. I received a large box, which is great, it will last a while.
I would recommend this to a friend!
Written by a customer while visiting Staples
Customer Rating
5
Well made and secure envelopes
on November 2, 2025
Posted by: BreSweeney88
[This review was collected as part of a promotion.] When sending confidential documents and/or checks in the mail, these are a great envelope option. The envelopes have the security print on the inside to obscure the view, if held to the light. They also have good sized address windows located on the front.
When handling the envelopes, it's apparent that they are made with quality and convenience in mind. The paper used is sturdy and the ready to use seal on the back make them easy to close, without having to wet them. They come in a box of 500, which will last a small business for a good amount of time.
My favorite detail, included with the envelopes are the ready to seal flaps. My least enjoyed part of handling envelopes is wetting the glue that is on most envelopes. Having that part of the job, ready for me, is a great convenience. I will recommend these envelopes to my friends who own small businesses.
When handling the envelopes, it's apparent that they are made with quality and convenience in mind. The paper used is sturdy and the ready to use seal on the back make them easy to close, without having to wet them. They come in a box of 500, which will last a small business for a good amount of time.
My favorite detail, included with the envelopes are the ready to seal flaps. My least enjoyed part of handling envelopes is wetting the glue that is on most envelopes. Having that part of the job, ready for me, is a great convenience. I will recommend these envelopes to my friends who own small businesses.
I would recommend this to a friend!
Written by a customer while visiting Staples
Customer Rating
1
Will not buy again
on December 30, 2025
Posted by: JK7878
Many of the envelopes received had melted, cloudy windows and the adhesive flap was adhered in its default state. Some in the box were not melted and defective, but many were.
Written by a customer while visiting Staples