Whiteout mail meaning

A blast from the past!

"Whiteout" was a popular brand of correction fluid, also known as liquid paper, that was widely used in the mid-20th century. It was a type of opaque liquid that was applied to paper to cover up mistakes or corrections.

In the context of mail, "Whiteout mail" likely refers to a letter or package that was sent with a correction or mistake, such as a misspelled address or incorrect postage, and was subsequently corrected using Whiteout correction fluid.

In other words, "Whiteout mail" was a piece of mail that had been corrected or altered in some way using Whiteout, often to fix a mistake or error. This term was likely used in the past to describe a piece of mail that had been sent with a correction, and was not necessarily a specific type of mail or service.