Best Envelope Moisteners of 2025

"I purchased this to seal envelopes for my thank you cards from my wedding, and it worked great! The sponge on top allows for a smooth application without being too thick. Great product for the price! I didn't even finish one bottle sealing 100+ envelopes!"

"When I started planning my wedding, I bought these adhesives knowing I would be sending out a lot of mail. They were a life saver and worked as described! No leaks and they seal envelopes really well. I highly recommend them for bulk mail!"

"This Quality Park Envelope Moistener has been a total game-changer for me! Sealing envelopes is now effortless—no more struggling with dry or sticky envelopes. The applicator tip ensures even application without mess and dries quickly, keeping everything sealed. It's a great value for money!"

"I can't believe I lived without this! Licking envelopes is a thing of the past for me."

"I've never encountered any issues. They're easy to use and last long, plus the price is fantastic."

"These are my go-to for sealing church letters. Now, I won't use anything else!"

"I've found the 1InTheOffice Envelope Moistener to be an essential tool for sealing envelopes effortlessly. It eliminates the need for licking or sponges, making the process quick and mess-free. I love the thin design that allows for precise application, keeping my fingers clean. Plus, having a backup moistener is a great convenience!"

"This moistener is superior to others I've tried. Initially, I struggled a bit with getting the right amount of moisture, but after some practice, it now releases the perfect amount of water. The water does get a bit milky, which I believe is just residue from the glue on the envelopes, but it doesn't affect performance. I did notice the sponges wear out faster than I'd hoped, but at this price, I can easily replace them."

"I can't imagine doing my holiday cards without an envelope moistener! It makes the task of sealing 32 Christmas cards so much easier. I'm thrilled to have found this product, as I really dislike licking envelopes!"

"I send out 80+ holiday cards, and dealing with the envelopes is always a pain. These little sticks are a great solution. They sealed the envelopes perfectly and didn't make a mess."

"I never usually follow directions, but when I tried to open this at work, it was impossible. I squeezed too tight and it flew over my cubicle! The second one I just aimed for the trash can after removing the top portion. There HAS to be a better way to package this! Good product, though. Very sticky."

"Initially, I thought the moisteners had dried up since I couldn't get any glue out. After removing the white tab and the stopper, it worked like a charm. I find the envelope moisteners great for sending lots of snail mail. I would definitely recommend them."

"This product works perfectly for my needs. I send out 100+ letters a week, and these sponges save me time, spit, and paper cuts. One set lasts way more than a year!"

"I'm not fond of licking envelopes, so this product makes a huge difference. There’s no mess and it seals securely!"

"I use these moisturizers for my church's card ministry. No one likes licking envelopes, and everyone appreciates how quick and easy they are to use!"

"I absolutely love this product. It's incredibly easy to use and works wonderfully! I even bought one for my 83-year-old father, and he adores it too. He appreciates how simple it is for him."

"I really wish I would have purchased this years ago! It's saved us a tremendous amount of time with our Christmas cards this year. I believe it's a must-have for any office mailing."

"I found these sealers to be very useful, but I did have to learn how to use them effectively. Once I figured out the trick, they performed excellently. My only concerns are that sometimes too much fluid comes out, and the sponge tends to shed after a few uses."

"I love how easy it is to seal envelopes now, especially after covid. This product is just what I needed!"

"I had to figure out the water amount needed for proper use, but once I did, it worked great for me."

"Removing the silver discs was not mentioned initially, which caused some confusion for me."

"These moisteners were ideal for my Christmas cards. They didn't leak or add too much water, unlike plain sponges I've used before. Super cheap, so I had no reason not to buy them!"

"I use these with my pre-k kids for letter tracing and erasing on a chalkboard. They work great!"

"I purchased four of these for my Christmas cards. They were easy to fill and worked well. The small size is a bonus, and I only needed one, so the others are perfect for stocking stuffers!"

“When I needed to seal over 100 envelopes, this product was a true lifesaver!”

“I stuff a lot of envelopes, and I absolutely love this moistener.”

“After years of not sealing envelopes, I had to start again. This product makes it so easy—I just roll it along the glue and seal away!”

"I bought these for work to seal envelopes. They work great overall but be careful not to over squeeze or they’ll moisten too much. The sponge wore out faster than I expected, but for the price, I wasn't expecting longevity. One bottle lasted about 6 months, and I love that they're refillable. I'll definitely repurchase after using all four."

"I use these every day and they’re really handy since I don’t want to lick envelopes. However, the glue mixes with the water, so I need to clean them often. My only real issue is that the sponge could be thicker, as it crumbles too quickly. They’re heavily used at work, but overall, a really good product. I would recommend it."

"I paid $14 for four bottles, which I realize is more than I could have spent elsewhere. The water comes out too quickly, making other parts of the envelope wet. But they’re still useful."