一句话：帮我翻译一下．在线等．谢谢了！！！

这样写就可以了

Dear sir:

Kindly inform you that my email is available now, pls contact me via email if you have any instructions.

Have a nice day.

BR

yours

xxx

Dear Sir,

This is XXX(你的英文名). Please be noted that my work E-mail box is effective. Any indication please inform me via this email address.

Thanks and regards,
XXX

Dear Supervisor:

My e-Mail has been activated already.You can give instructions to me via my e-Mail. Thanks.

please kindly note that my email box has been available now, any instruction, pls approach me with my e-mail

如果给上级写的话，别那样写。
Dear sir,
I have got my own e-mail, if you have any suggestions and instructions, just let me know. I will try my best to do that.

dear_ ;

please__ （注意到吗？好像不准确）表示，我的电子邮箱已开通___ ，任何指示__ ， pls方法，我与我的电子邮件; 。