When sending an email for a job sample, it is important to write a clear and concise subject line that catches the hiring managers attention and identifies the intention of your email immediately. Here are some tips to write a subject line for a job application:

• Keep it short and to-the-point, less than 50 characters if possible.
• Include your name, the position you are applying for, and possibly the job number or referral information.
• Use professional, polite language and avoid informal words or phrases.
• Read the instructions carefully and follow any specific guidelines for the subject line.

It is also important to proofread your subject line to ensure there are no typos or punctuation errors. Remember that the subject line is the first thing the hiring manager will see, so make sure it is well-crafted and personalized to stand out from the competition.