Engineering360: "“Did you get my email?” Communication tips for engineers"

I have read a very similar quote that was attributed to Winston Churchill: "The single biggest problem in communication is the illusion that it has taken place."

E-mails are "non-communicated" for many reasons, here are just a few:

• sender isn't valid source (authority)
• contents aren't believed (validity)
• contents aren't applicable (A vs. Z)
• contents are irrelevant (just wants to be heard)
• contents are dubious (more info first, please)
• not intended for me (why am I on this 'forward to all')