For example, if you are writing a cover letter for a job, you would write in a formal style.
Make sure you list the position you are applying for in the subject line of your email address, so the employer is clear as to what job you are applying for.
(Here are some cover letter samples if you'd like to get a visual idea.) Other tips pertain only to the electronic medium, and when disregarded, could ruin your chances before your foot is in the door.
What you write in the subject line can determine whether your letter gets read, according to Lydia Ramsey, business etiquette expert and author of .
Also, don't include attachments unless they are requested.
Some companies block all emails with attachments to prevent viruses.