Why ask? Don't you know? In the first place, look at the name itself. It said "Envelope Seal" therefore it is invented by a seal(sea lion).
he invented the envelope seal
seal
The best way to seal an envelope without using envelope gum is to use a wet sponge or cloth to moisten the adhesive strip on the envelope flap before pressing it down to seal it shut.
The anniversary seal is typically placed on the back flap of the envelope, centered for a neat appearance. Alternatively, it can be positioned in the lower right corner of the front side, depending on personal preference. Ensure that the seal is applied securely and that it complements the overall design of the envelope.
Write the words that you want to convey on a piece of paper. Fold that paper and place it in an envelope. Seal envelope. Write the address of the distributer on the center of the envelope. Place stamp in upper right hand corner of the envelope. Place the envelope in a mailbox.
This is how you spell "seal" in french: seal
You have spelled it correctly. "To seal" means to close securely, and "sealed" is the past tense of "to seal."
The back of the envelope will be the triangular-shaped part that folds down in back; it usually has some kind of adhesive to seal the envelope (most often by moistening the strip).
No, they are meant to decorate the back of the envelope.
Maybe, but it is so small I wouldn't worry about it.
Absolutely !... There is no legal requirement to enclose a letter in an envelope.
They add interest to the cover. Do not remove the seal from the envelope, it has pretty much no value unless still on the envelope. That provides additional information such as the place that it was inspected/censored.