The word "spam" has two meanings, and they are very, very different. How exactly did this word come to refer to both canned ...

it takes time to open a PDF file and scan its contents. See spam. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

Also called "bounce spam" and "reverse non-delivery report spam" (reverse NDR spam). See NDR spam. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.