How Do I Politely Ask a Client to Sign and Return a Document via Email?

I need to send a document to my client and also need the document signed and sent back to me. How can I write the email to them? Please help me.

Please write exactly what you have written here, along with the details of the documents, the reason why you need them signed, and the date by which you should receive the documents back. Trust this helps. Wish you all the best!

Regards,

If the document is very important for you, then, if possible, make a personal visit to obtain what you need. If the document is important for your client, send a polite email explaining the necessity of possessing such a document, duly signed by both parties, for business, safety, and security purposes. Emphasize and appreciate the business/communication relationship, and it will be appreciated. Your work will be completed without any issues from your client.