Top Flight PSTF10NWT #10 Envelopes, Strip & Seal, Security Tinted, White Paper, 24 lb, 500 Count

These envelopes get the job done without any fuss. The paper feels sturdy enough for everyday mailing, and the security tint is a nice touch so nothing shows through. I like the peel-and-seal strip—it saves time and sticks well without needing to lick or tape anything. They run smoothly through printers too, which is a big plus if you’re printing addresses in bulk. The only small downside is they’re not super thick, but for the price and quantity, they’re a solid value. Overall, a reliable choice for home or office use.

Are there lower cost envelopes? Yes Are there higher quality envelopes? Yes, these are obviously not premium envelopes Then why are these my envelopes of choice? Because these meet my standards of "good enough" at the lowest price possible. My use case is selling and mailing trading cards, by the way. These have all the features that I value at a cost that is currently less than $0.04 per envelope ($18.99 for 500). For my use case, self-sealing so that I don't have to lick, some type of security tint, and high enough quality paper so that I don't have to worry about damage are the most important features. Yes, there are things that can absolutely be better. So if you are looking for the absolute best envelopes, these are not for you. But my point is that these are good enough for most general use cases. I have yet to find something lower in cost that meets my standards, and anything higher quality than these is not necessary for most cases. Some examples of things that can be better: The security tint looks rather cheap but still gets the job done. The adhesive is not the strongest and the strip is not quite long enough to cover the entire flap, so there's always a small chance that the flap can get caught somewhere in the sorting machines and take the envelope apart. If I am sending something more valuable than usual, I'll sometimes tape down the edges of the flaps for peace of mind. With that being said, I haven't had a problem without taping down the edges.

I bought this pack of envelopes at a moment when I simply couldn’t wait. I had several important documents to send out and needed something reliable, clean, and professional without wasting time. The first thing I noticed was the paper quality. These are not the thin, flimsy envelopes you sometimes get. They feel sturdy and well-made, which instantly gives a more professional impression—something that really mattered to me. The self-sealing feature was a huge plus. No glue, no hassle, no second guessing if it will stay closed. Just peel, seal, and done. When you’re in a rush, small details like that make a big difference. I also appreciate the quantity. With 500 envelopes, it’s one of those purchases you make once and don’t have to worry about again for a long time. Perfect if you handle regular mail or just like being prepared. It’s not a “fancy” product, but it’s one of those essentials that quietly does its job well—and sometimes, that’s exactly what you need.

I bought these envelopes in a moment of urgency while setting everything up for my live streams from home. I needed to send out important documents quickly and didn’t want to deal with the hassle of traditional envelopes. What I loved most is the peel-and-seal feature—just peel and press, no licking, no mess, and it saves so much time. The quality also gave me peace of mind. The paper feels sturdy, the security tint keeps everything private, and they run smoothly through my printer without any issues. They’re practical, reliable, and do exactly what they promise. Great for both personal and professional use

Very good product quality. It comes with a cover and adhesive to seal the envelope, which really makes your work easier. With this quantity, you won't have to worry for a long time because the price and quantity are excellent.

These No. 10 envelopes are exactly what I needed. The adhesive seals securely and effortlessly, so there’s no worry about them coming undone. Sturdy and professional—I’ll definitely be using them for all my mailing!

love the adhesive closing strips. price decent for the number of envelopes

Cannot easily see through them. Great organization box, great quality seals easily. Thickness is perfect good weight