跟進的英語郵件怎樣寫

Dear John

你好

Good day. Still no reply from you，l wonder if you receive my email or not.

我發信後，一直沒有收到您的回覆。您是否已經收到郵件

It is my job responsibility to follow up you and improve my work and offer you better support.

我的工作職責是跟進並給你提供最好的服務來推動我們的工作。

Many thanks.