I think that the most important element to be included in a cover letter is the personal details of the applicant. Therefore, there must be the inclusion of the first name and the last name of the applicant. Thereafter, the complete address of the applicant has to be mentioned so that the employer can send any correspondence to the address of the applicant. The date of the application of the cover letter is important to be mentioned by the applicant. The email address of the candidate is also important because any query, reply or acknowledgement can be communicated conveniently without wasting much time by the employer.