跟进的英语邮件怎样写

Dear John

你好

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

我发信后，一直没有收到您的回复。您是否已经收到邮件

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

我的工作职责是跟进并给你提供最好的服务来推动我们的工作。

Many thanks.