Letter to Supplier Confirming Payment was Previously Sent by Mail, Request to Contact if Not Received
I am in receipt of [SOURCE, ex. your payment request letter of [DATE]]. I have looked through our records and determined that our check #[CHECK NUMBER] in the amount of $[AMOUNT] was sent to you on [DATE]. If you do not receive this check by [DATE, ex. the end of this week], please contact me and I will immediately forward a replacement check to you.
Sincerely,
