My name is _________ (name) from _________ (name of the company) and this email is in reference to our work against your purchase order (PO) __________ for the _________ (Service provided) at _____________ (Location) which is completed/ was completed on __/__/____ (Completion Date).
Our account statement related to the work done is attached along with this email. Kindly arrange for reconciliation of the same with your books and inform us if there is any difference. At the same time, if you can arrange to share our ledger in your books, it will be highly appreciable.
[Digital Signature – if applicable]
____________ (Contact details)