英文邮件的开头和结尾怎么写啊?!

Question

每次都是Thanks for your last letter.和How are you?
Yours, Love,
很单调啊!!!
有没有别的呢?
朋友们,帮帮我了!!!

Answer 1

Receiving your letter made me very happy.

yours,sincerely
yours,faithfully

Answer 2

It is my pleasure to write here for you....
yours faithfully.