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.
"No, the cost of mailing a letter doesn't depend on the shape of the envelope but how much weight is actually inside the envelope. It's based on the weight."
It depends where you are sending it from and where you are sending it to. Mailing it from Buenos Aires to somewhere else in Buenos Aires is relatively inexpensive. Mailing it from Buenos Aires to Kazakhstan costs a lot more.
Padded envelopes are often used for mailing small objects that require a little more protection than a normal envelope but not so much that they require special wrapping and a box.
A standard A6 envelope is 4 3/4 inches by 6 1.2 inches, but you would need at least double that amount of paper than that to make envelope since it is more than just a flat sheet of paper. You might consider buying an A6 envelope from an office supply store or online.
The post office offers various services like make a Visa and passports. A dedicated agent will be happy to help you find more information on their official website.
As many as will fit. I have one envelope in my collection with 44 stamps on it! The sender used one cent stamps to mail it. Some people will overlap stamps to get more to fit, which is okay as long as the Post Office can plainly see that they are all there.
There are two more likely possibilities : LESION -- a tearing or damaging injury LIAISON -- the office (or person) in charge of interacting with another agency or office
More often, the receiver will be charged the extra postage. This is a big faux pas if you are mailing in job search materials. Weigh the envelope and look up the postage per ounce to avoid this situation.
Yes it does. It is .20 cents more for a square envelope. You can look it up on usps.com. Right now it's .65 cents to mail a square envelope.
I'm not sure I understand the question, but a physician can't legally bill for more services than the office provided at that visit.
In the UK the Royal Mail charge 64p for a letter delivered 1st class (next day).They charge 55p for a letter delivered 2nd class (within 3 days).An envelope measuring a maximum of 24cm x 16.5cm x 0.5 and weight no more than 100 gram's is classed as a letter.A CD and it's case would fit into an envelope with these dimensions.