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As long as the envelope doesn't weigh too much (If you're just mailing paper, then it probably doesn't) then no it doesn't cost more.
An envelope can never be too large for itself.
Bubble mailers look like large envelope mailers, but they offer a layer of protection that protect the contents. They are useful for mailing books, pictures, and other smaller packages.
What is the standard-size large envelope?
Take your envelope to the Post Office and they will weight it, and give you your answer as the cost of mailing anything is done by weight.
You can find mailing addresses for large companies on the Internet. All you have to do is find the company you want to find the mailing address for, search for them on the web and you will find their mailing address.
large flat...... 30fo50.com
A 4-ounce large envelope currently costs $1.57.
There are lots of different sizes of shipping packages. You can choose from: Letter, Large Envelope, thick envelope, Package, Large Package and Irregular packages.
You need to go to the Post Office and have it weighed and metered postage put on it. I understand this, but I am not mailing it through the post office. I am mailing it through my high school to be sent to a university in Dunedin. Is there anyway I can find out online how many stamps would be needed ; it will only be holding three pieces of paper.
0.1 micron
an 8x8 envelope is charged "parcel rate"..because it is square and over the letter size dimension...cant be a "large envelope" because it is not rectangular