Dear [Recipient's Name], I am writing to acknowledge and confirm the receipt of the file/documents provided by you on [Date]. We greatly appreciate your promptness in delivering these files and understand their importance in [briefly mention the purpose or project]. Upon review, we found the received files to be complete and accurate. Our team will now commence the evaluation/processing/review of these documents in accordance with the established protocols and guidelines. To ensure smooth handling of the file, we have assigned a unique reference number to it, which is [Reference Number]. Kindly reference this number in any future correspondence related to this file for better traceability and coordination. Furthermore, please note that the file will be treated with utmost confidentiality and securely stored in our system. Access to the file will be restricted to authorized personnel only, with appropriate measures in place to safeguard sensitive information. Should any additional information or clarification be required during the evaluation/processing/review, we will reach out to you promptly to address any concerns. Additionally, if you have any specific requirements or instructions regarding the file, please do not hesitate to include them in your correspondence or email us at [Your Email Address] or call us at [Your Contact Number]. We value your feedback and are committed to providing you with the best assistance possible. Once again, we extend our gratitude for providing the necessary files. We assure you that we will handle them with the utmost care. We look forward to maintaining a fruitful and collaborative relationship moving forward. Thank you for your cooperation. Sincerely, [Your Name] [Your Designation/Organization] [Your Contact Information: Email Address, Phone Number]