Asking for approval mail from customer

Here is an example of a mail that can be sent to a customer to request approval:

Subject: Request for Approval - [Order/Project] Details

Dear [Customer Name],

I hope this email finds you well. We are writing to request your approval for the following [order/project] details:

We have reviewed the details and are confident that they meet your requirements. However, we would like to confirm with you that everything is accurate and complete before proceeding with the next steps.

Please review the attached document and let us know if you have any questions, concerns, or changes. We would appreciate it if you could respond to this email by [Insert deadline for response].

If you approve the details, please reply to this email with a simple "Approved" or "APPROVED" in the subject line. If you have any changes or concerns, please let us know and we will work with you to resolve them.

Thank you for your prompt attention to this matter. We look forward to hearing back from you soon.

Best regards,

[Your Name] [Your Company] [Contact Information]

Attachments: [Insert attachment(s) containing the order/project details]

This is just an example, you can modify it according to your needs and the specific requirements of your customer.