The cost of your mail is all about the weight of the package. the more that it weighs, the more it costs. The shape of the envelope is not going to change the price at all
"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."
The cost would depend on the weight of the parcel. Big envelopes cost more than small envelopes of equal weight. You probably should go to your post office to mail this.
I know the post office has to hand process square sized envelopes. Their machine has a hard time locating the stamps location because of the envelopes size. I have mailed square envelopes a lot of times. If mailed within the U.S., it's $0.03 more than the standard $0.44. So it is 47 cents....that is- if it is the normal weight of a card or letter. If it's over an ounce, the price goes up.
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.
Mail and stampage is based upon the weight of the mail. As long as the letter is still light, you shouldn't need more postage.
Yes, there's a non-machinable surcharge of 20 cents over regular postage.
Yes, the shape can have an affect on the cost. Large 'flats' require a premium due to size. And square envelopes are considered 'odd' and will need more postage. Consult the USPS web site for specifics and current costs.
Number 10 envelopes are the classic business sized envelopes and can be found at most stationary stores such as Staples. The website, Graphic Focus has more information on envelope sizes.
Shipping envelopes can be purchased as most local office supply stores. Staples and Office Depot are just two examples. In order to acertain where these envelopes can be purchased at the lowest cost you may have to price compare with the stores directly.
$0.61 and more, plus considerable time.
is extra postage required for mailing a gift card
In the US, at least, you do not .. or more specifically, you can write whatever you like on the envelope and it won't make a bit of difference how the postal service actually delivers it.Prior to 1975 for domestic mail, and 1995 for international mail, you could specifically request air mail (and purchase a special, higher priced stamp). Nowadays, though, the USPS makes decisions on how to route mail based on distance and service class, and all "first class" mail will probably spend at least some time on an airplane if the destination is far enough from the origin point.If you are in the US, no...because Air Mail service no longer exists. It is now called Priority Mail Express, and you must use the special Priority Mail Express envelopes they provide for you. (The envelopes are free; there's always a stack of them at the Post Office for your convenience.)