Careerbuilder.com has a great article on Top 10 E-Mail Mistakes. Check out the article for more information. Here is a quick run-down:
A vague subject line.
No sign-off.
Being too casual. (C U l8r!)
Going on and on and on.
SHOUTING IT OUT.
Striking the wrong note.
Weighing others down.
Sending to the wrong box.
Mixing business and pleasure.
Over e-mailing.
