Can you send your e-mail to a different address, please?
您能将邮件发送到另外一个邮箱吗？
I haven't received your e-mail. Can you send it to a different address of mine, please?

我没有收到您的邮件。您能把邮件发送到我的另一个邮箱吗？

I sent you an e-mail but it got returned.
我给您发了一封邮件，但是被退回来了。
I sent you an e-mail this morning but it got returned. Do you have a different e-mail address I can send the file to?
我今早给您发了一封邮件，但是被退回来了6您是否还有其他 邮箱可以接收我的邮件？