Which of these are not appropriate types of messages to send by email?

True or false? The best mode of communication is always email.

Which of these words or symbols have the possibility of triggering a spam flag?

An <AR> in an email typically denotes what?

What does NRN mean?

What is an email signature block?

What are vCards and why are they sometimes distracting or difficult for the recipient?

What does it mean to 'respect somebody else's bandwidth'?

What is the better solution than using bold or italic to emphasize meaning when e-mailing or posting online?

How often is it sensible to use 'reply all' when replying to an e-mail?

Why is it sometimes important not to leave out the message thread, i.e. the previous messages in the e-mail chain?