The 19 types of envelope for a million different messages

BaddeleyBrothers anatomyenvelope title

Who’d have thought there were 19 different types of envelope? And we’re not talking about sizes, adhesives and linings. Different shapes and construction methods have evolved over the years to suit many applications, and not always letters! Envelopes can carry three-dimensional, and sometimes heavy-duty, objects, such as nuts and bolts, and are much more sustainable … Read more