A job application is usually accompanied by a cover letter, which provides a supplementary overview of why you are suitable for the role. A cover letter is a great way to introduce yourself and your CV when applying for a specific position. They are generally one page at most in length, divided into a header, introduction, body, and closing. They should follow some key points:
Email applications can include a brief paragraph acknowledging where you discovered the vacancy and why your skills and experience fit the specification.