Include Information about the Company: One must clearly state the name and the address of the company. Try to use a letterhead of the company for any business use. Include the date: Writing the date helps the person to have a record of the on_going business. Add the Recipient’s Information: In a business letter, one must clearly type the name, address, and the job title of the recipient to remove any ambiguity. Choose a Salutation: It is a way of showing respect towards the recipient. One can also use ‘To Whom It May Concern’ if he doesn’t know the person addressed.
How do you know for sure whether or not to use a closing? One good test is to ask yourself whether this email is more akin to an instant message/text or a business letter. If you're giving your teammate a quick update on an ongoing project, a formal closing might not be necessary; if you're throwing your hat in the ring for a promotion, it definitely is required. When all else fails, and you're still not sure, err on the side of caution and include it. You'll never go wrong by being too polite and respectful.