Which of the Following Email Entries Might Cause a Recipient's

Multiple Choice

Which of the following email entries might cause a recipient's email account to interpret the message as spam and filter it out of their Inbox before the recipient knows it's there?

A) Discussing products that are often advertised through email campaigns
B) Using vulgar language in the body of the message
C) Leaving a signature or closing off the end of the message
D) A subject line in all-caps with a lot of exclamation marks