i believe the most you need is 3.
2.80
It depends on the weight It depends on the weight
how many stamps for a 10.4 ounce envelope
For the first ounce it will be 88 cents. There is an additional charge for the larger size. Each additional ounce is 17 cents.
One 49-cent stamp should be all that is needed.
The amount of stamps needed for an envelope is determined by weight. Weigh your a4 envelope and you will know how much postage is needed.
postage needed for A09 envelope
If it fits in a standard business size envelope, regular domestic postage stamp.
You can send up to five sheets of paper in a regular or business size envelope for one 42¢ stamp, to any state.
nope
It depends on how heavy the contents are and how big the envelope is.
The key document required for a trip from Manila to Hong Kong is a valid passport.