When sending messages both internally (within your company) and externally (outside your company), how do you differentiate between sending an informal document or a more formal document (via e-mails, memos, or letters)? In what situations is an e-mail appropriate? In what situations are memos and letters appropriate? When would you make conference calls? For a business letter, what are some ways in which the 'tone' can be misunderstood? What can you do to avoid this possibility of miscommunication when writing a letter? Have you ever written a letter where your 'tone' was misunderstood? Share your experience. Can technology tools help in eliminating the possibility of miscommunication?