If you are not sure what gender they are (for example, Alex Smith could be male or female), then address them by their full name.
When addressing women, use the title “Ms” instead of “Miss” or “Mrs” to avoid confusion over their marital status.
Don’t state what position you held in your previous place of work and for how long, as this information is easily found in your resume.
Instead, use your cover letter to show how your skills and experience tie into the company's goals.
Either send the document as an attachment (preferred) or paste it into the email if the letter isn’t very long.
Remember to thank the hiring manager for their time and sign your name at the bottom of the letter.
If sending by post, you should provide a return address and contact information (eg a telephone number or email address) at the top of your letter or as a letterhead.
If you know the name of the hiring manager, using the salutation “Dear” will be sufficient, along with their title and last name.
Remember to change any research into your own words, so it doesn’t appear copied straight from their annual report.
If a hiring manager considers you to have a sincere belief in the company’s mission, your chances will be better.