Who is writing to whom?

1.who is writing to whom ?
2.how did tom start his email?
3.how did tom end his email?
4.what is the subject of the email?
----- Nội dung dịch tự động từ ảnh -----
To: nam@webmail.com
Subject: School activities last summer
Dear Nam, How are things? Did your school have any community activities
last summer? We did some very interesting activities. We collected rubbish
in a nearby park. We also planted trees. Then we watered them every day,
and it was enjoyable to watch them grow up. We also had a lot of fun and
learnt some skills. Please write to me and tell me about your school
activities.
Best, Tom