1. E-mail must be subject, and the subject should summarize the content of the e-mail simply and clearly. This is a professional behavior. Ambiguous subject will make the recipient don't know and waste his time, or be directly regarded as spam by the recipient. A clear subject makes it easy for the recipient to quickly understand the content of the email and judge its importance. Usually, letting others know the content of the email at a glance through the subject will speed up the other party's reply to the email.
Every email should have a subject so that the recipient can reply to the subject. Never reply to an email directly to discuss another topic, just reply to the same topic directly. When replying to the other party's email, you can change the title according to the content of the reply, instead of a long list of re: re.
2. Subject Format Label Mail Subject+Project Name
Discussion: Set a deadline and ask for opinions. You can go back or not. But the immediate superior must reply and confirm.
Sharing: The document has been confirmed and widely publicized, but it cannot be returned.
Request for confirmation: generally, it is communication between direct superiors, which requires confirmation from superiors, not mass mailing.
Task: The superior directly assigns tasks to the subordinate.
If it is a job application, sometimes the format will be indicated in the recruitment notice, such as: [school+major+name+undergraduate/master+graduation date] or [name-major-school-working day/week]. If there is no requirement, it is best to indicate your name, school, major, position you are applying for, and the number of days you can work in a week. Anyway, how can HR see clearly? Because when HR screens resumes, it will first set some basic screening conditions, such as major, grade, and the number of times you can work in a week. If these conditions are not specified, HR will click on the email to view the contents of your resume. It is ok to submit a resume. Watch too much, and your brain explodes. Who wants to click in?