Here's my new e-mail address.
这是我的新邮箱地址。
Here's my new e-mail address. All future correspondence with me should be sent to this address.
这是我的新邮箱地址。日后所有给我的邮件都请发送至此邮箱。
Please send your e-mail to my new e-mail address, which is Kelly@abc.com from now on.
从现在开始，请将邮件发送至我的新邮箱，地址是Kelly@abc.com。

I am closing my e-mail account.
我将注销我的邮箱账户。
Please note that I'm closing/canceling my Yahoo e-mail account. All e-mails sent to the Yahoo address will not be received.
请注意，我将注销我的雅虎邮箱账户，以后发送至该邮箱的邮件我都将无法收到。