your <last name-your
first name-year-month-day.docx>
for example: tanaka-saburo-2021-011-21.docx
The date should be the date you
send the attachment. If you send another draft later, it is easy for
me to see which file is the most recent one.
In your e-mail message, tell me
your name and the class you belong to. It is better to use your
university e-mail account that indicates your student number in the
user name.
When I receive important homework assignments from students, I immediately send a reply e-mail to confirm that I got it. If you don't get a confirmation, check the e-mail address carefully and send it again.