Confirm the received payment for specific goods and services with this professionally made confirmation letter template. Learn how to write a proof of rent payment letter for your tenants in minutes.Download our free proof of payment letter to use right away. A proof of income letter, otherwise known as a salary verification letter, is an official document that proves you're currently employed and earning a salary. A bank confirmation letter (BCL) is a correspondence between banks that confirms the existence of a valid line of credit to one of its customers. An employment confirmation letter is a document that can verify your employment with a current or former company. Discover 7 different employment verification letter templates with different details for proof of employment or future job opportunities. By completing the online Disability Access Request Form. Entered in the tracking system and an electronic confirmation is sent to the requestor. Confirmation letters are a formal way of acknowledging receipt of an application, order, or payment.