Partly because these are fed into different machines, and partly because the padding doesn’t rip as easily as a plain paper envelope. Instead of a padded envelope, you could also use a stiff ...

Envelope printing is a bit like the old joke about the talking dog: you don't criticize its accent because of the miracle that it can talk at all. Many printers, especially the advanced devices ...

Secondly, according to Recycling.co.uk, paper envelopes with bubble wrap in are classed as composite materials, so cannot be recycled, as you can’t separate the bubble liner from the envelope.