Final answer:
A professional email should include a courteous closing with your full name and a clear subject line. Including the receiver's name in the subject line is not necessary; focus on making the subject line informative.
Step-by-step explanation:
The two essential elements that should be included in a professional email are a complimentary close and the receiver's name in the subject line. A complimentary close is a polite way to end an email. You should use a professional closing such as "Regards" or "Sincerely" followed by your full name. Including the receiver's name in the subject line is not always necessary or appropriate; instead, ensure the subject line is clear and specific to the content of the email. For instance, "Meeting Request: [Topic] [Date]" could be a good subject line. Always start your email with a proper salutation and state the purpose of your email in the first couple of sentences.
In summary, your email should have a clear subject line that encapsulates the main point of your email, an appropriate salutation, and should end with a polite closing, including your first and last name. It is also important to have an appropriate email address that conveys professionalism.