100 Pack 6x8 Rigid Mailers - 550 GSM Thick Self Adhesive Stay Flat Cardboard Envelopes for Shipping Photos, Documents, Collectible Trading Cards (White)

I used these as outer envelopes for my wedding invitations, which were sealed with a wax seal and dried flowers which I wanted to protect while mailing. They are a great size for my 5x7 invitations. They are nice and sturdy and did a good job protecting their contents.I mailed them via USPS and they did charge me a fee for non machinable / rigid, but that's partially due to the thick invitations that I put inside. If you use these to mail something thin, they are not too rigid by themselves.

We use these to ship our smaller size art and they work great. They are rigid and do not bend easily, and the top sticks well and does not open after sealing. I do add a Do Not Bend stamp to the bottom when I ship but we have never had an issue with the envelope or art arriving safely and flat.

Does the job. My go-to rigid mailer (I've tried quite a few). Color is accurate. Pretty rigid. Good adhesive (though I always add tape just as backup). I can't think of any improvements, so that's a big compliment! A good incentive to go old-school and print out holiday photos and actually send them to family as snail mail...just as soon as I actually go through the photos! :D

Raw card (Sports, Pokemon, Magic: The Gathering etc.) sellers take note. Enough with the PWE (Plain White Envelope) packaging when a far superior option exists. I'm not exactly certain what some are doing to have their shipments returned. I have mailed well over one hundred cards thus far using eBay Standard alone, with no troubles experienced. I use this mailer for USPS eBay Standard, USPS First Class and USPS Priority, based on the value of what I am shipping. These mailers are so well made, all three options are viable, and will keep your cards safe in transit, unless purposely mishandled.Parameters for USPS eBay Standard: No smaller than 3.5” x 5” (Check), No larger than 6.125” x 11.5” (Check), Envelope thickness is uniform, less than 0.25” inches at all points, and not too rigid (Check - Assuming one presses firmly on the adhesive strip - I use a modest amount of shipping or painters tape neatly and with care on the lip to ensure no catching if the seal is not secure, which is quite rare - Adhere to the thickness requirement and do not think because it is underweight you can shove more in it), Weighs up to 3 oz. (Adhere to the maximum weight and do not test the boundary - Consider overall weight, including the shipping label - Try to keep it under 3 ounces when possible and always select 3 ounces as the weight - You owe it to the buyer to protect their item and ensure an unproblematic delivery - It does not suit a seller to be frugal at the expense of quality), Envelope has recipient address parallel to the longest side (This should be understood, but I have witnessed other sellers I know overlook this detail - Expect returns if your label is not printed and placed properly).I have listed what I suspect may be where some misstep in using these mailers for the aforementioned purpose. The remaining requirements are fairly obvious and available via eBay articles for further reading. Final Note: The contents of my shipments in these mailers mostly include the raw card, penny sleeve, top loader, and waterproof plastic bag, affixed to a paperboard insert, preventing movement. Total weight is consistently under 3 ounces.

This bad boy can fit so much freaking mail in it!I have bought, rebought and re rebought these mailers so many times, I should've bought and rebought stock in the company by now...I sell and ship stickers and these work great for keeping everything safe. They're durable enough to keep the enclosed items flat but not so heavy duty that they weigh too much. and They're the perfect size for the printed shipping labels that I use. Been shipping with these for a few years now and have never had a single one of them get damaged during shipping. They're WAY more dependable than my ex!The seal is good too, almost tooooo good... Yeah don't accidently seal them up before you finish putting everything inside that needs to go inside cause once it's closed, it stay that way, there is no reopening it and resealing it.Long story short 10 outa 10 would buy again and again and again and again and again and again.Make sure you smash that like and subscri... Oh wait this is Amazon.Hope you enjoy the review and found it helpful! Don't forget to love each other!- Witty

These mailers are perfect for sending flat material. The cardboard is strong and more environmentally responsible than bubble mailers. The adhesive seal is secure.

Impressed with the 100 Pack 6x8 Rigid Mailers! Sturdy construction ensures my documents stay secure during transit. Convenient size, easy to use, and excellent value for bulk shipping needs. A reliable choice for sending important materials hassle-free!

I sell stickers on Etsy and package all my orders with these envelopes. I can mail them with $0.65 of postage from USPS which is fantastic.My only complaints are:1) When I put these in certain USPS drop off boxes (the blue ones), if I put in more than 2 at a time, they can get stuck in the door mechanism and I have to stick my hand in there to push them down. This isn't a problem if I'm careful, but it makes me worry that at some point these might get stuck in similar mechanisms / machines during the shipping process.2) The "tear-off" tab on the flap is super useful, and is something I think is really important for end-user experience, but when you tear these off they leave a bunch of paper particles flying around. It's not a huge deal but is something to keep in mind.