RilesPJoined on 19 Mar 2012
The design and font should compliment your resume.
If you are currently unemployed or have gaps in your job history it's a good idea to address the reasons briefly in your cover letter.
If you must specify a salary you could instead state the salary range you've had over the years.
When emailing a cover letter make sure the subject line is clear and specific to the job you're applying to. Don't leave it blank.
End your cover letter stating that you'll follow up in a few days to see what they think of you and to set up an interview.
Don't write the same things that are on your resume as it shows a lack of creativity.
A cover letter isn't needed if you are meeting the hiring manager in person and are handing them your resume. It is needed over indirect contact.