1, the subject is simple and clear: the subject of the email should be "candidate's name+major+purpose". This will also enable the tutor to quickly understand the intention of the email and deepen the impression of the name.
2, the details are very important: you must pay attention to the format, tutor's information, polite language when sending emails.
3. Email time: The best time to email is 7-9 pm, during which the tutor is more likely to reply.