帮忙翻译成英文，别用电脑，谢谢！在线等！

I have not received the mail yet, please provide the mail's number to me, I can confirm with the Postoffice.

I have not received the letter until now. Please give me the registered number of the letter, so that I can check it up at the post office.

I have not received the mail yet, please provide the mail's number to me so I can confirm with the Postoffice. 虽不是我写的，但改自最好的答案因为他句子不够通顺

I have not received e-mail, please provide your e-mail ID, I went to inquiries about the post office.

I have not yet received your mail, please provide mail number query, I went to the post office.

I've not received your letter yet. Please provide the registered number which I will check at the post office.

有几位没有注意时态问题，在此用个定语从句来表达更好。