Write a memo explaining a change in policy. Write a fax involving a claim notification. Write an email requesting a meeting. (All in correct form)
Although there is not an example in your text of a fax, you can search and find it online. The reason I include a fax is businesses still use them for confidential information since they leave no footprints because they are not digital.
Your memo, fax and email should include date, to, from, subject and/or reference and content (maybe not in that order).
