The benefits of using a bubble wrap envelope are that it will protect any item inside it much better than a cardboard or paper envelope. It will also make the contents more water resistant.
There's no law requiring it to be in a specific kind of envelope, but sending CDs in a "regular envelope" isn't a good idea, because it could pretty easily get broken. That said, if it's a "mix CD", no big loss if it does, you just burn another and send that.
how much postage required for a 9x12 envelope weighing 4.6 ounces
I want to mail small bubble wrap envelope to Uganda. I need to know the postage.
Glue a sheet of bubble wrap to the inside of a mailer envelope.
In the US, $1.56.
2.80
I wouldn't recommend it. I purchased a couple of game on eBay. The seller sent them in a plain white envelope. I received an empty, torn envelope and no games. I would recommend using a padded envelope or wrapping the games in bubble wrap and then taping all the edges of the envelope for protection.
For the first ounce it will be 88 cents. There is an additional charge for the larger size. Each additional ounce is 17 cents.
It is preferable that bulbs be in their 'dormant' stage. To do this, uproot your bulb/s and let it dry in a cool dark place. Once you have done this it is easy to send the bulb/s through the mail in a protective container. Bubble wrap enclosed envelope or a box with bubble wrap to protect the bulb/s.
how many stamps for a 10.4 ounce envelope
You send a stamped, self-addressed envelope to Germany the same way you would send one to someone in the U.S. You fold up the envelope and put it inside another that you send to the person in Germany.