How to spot a phishing job offer email

So, a friend of mine recently got a weird email from a staffing company. She is looking for a job, and has been applying everywhere. She knew that she had not applied at this particular job, and sent it to
The Life and Tech of a Geeky Flight Attendant
So, a friend of mine recently got a weird email from a staffing company. She is looking for a job, and has been applying everywhere. She knew that she had not applied at this particular job, and sent it to