What does it mean when you write "enc." in a letter?

In order to ensure that your words will be interpreted correctly you need:

The recipient's address should go before the salutation.

When sending a mass e-mail, what should be in your subject line?

True or False, it is always appropriate to "reply to all" when answering an e-mail.

Which one of these should you be whilst writing a business letter?

The subject line for a persuasive e-mail should _____.

Which sentence has errors in punctuation?

Which should be included at the beginning of a long memo?

Since e-mails are completely private and encrypted, there is no danger in including sensitive information like credit card numbers and passwords in your messages.

In the block business letter format, all text is left justified, including your return address information.