Letter of acknowledgement should be sent always when your company receives business document. The letter basically serves as receipt, and it should be sent asap the document is being received. The tone of the letter should be polite and truthful.
Usually, letter starts with an acknowledgment of the receipt of the document in question while afterwards it should tell the recipient what action will be taken regarding received the document
Below is a is a sample of a acknowledgement letter sent to the sender of business document.
(Name of recipient)
Dear (name of recipient)
We would like to acknowledge the receipt of ______________ (document name). We are presently examining it and if there are no issues to be addressed, the signed (document) will be returned to you within ______ business days. If there are any further concerns regarding the (document), we will contact you by (date).
Thank you for your continued trust in our company and we look forward to doing business with you in the future.
(Name of sender)
(Position in company, company name)