Dear ______ (person's name),
Hi there! I was looking online and I found there was a job opening at _______ (friends job). I was wondering if there was any more information about what the job is and what it pays? The job looks amazing and I am very interested in it. Please email me back when you have time to. Thank you!
Your friend,
_______ (your name)
In the email, the writing process I went through is a persuasive letter. It is persuasive because you are asking your friend to help you get more info on the job and to help get the job.