This letter confirms an agreement to settle an outstanding account for RM10,000. In this article, we discuss how to write a conformational letter, look at sample templates for formal and informal confirmation letters and share some tips.Learn how to write a proof of income letter with our stepbystep guide and use our fillintheblanks template as an example. Applying for an apartment? There may come a time when an employee needs a proof of income letter to secure a loan or rent an apartment. Here's a template and what you should include. 1. Enter the current date. Use our sample "Sample Formal Confirmation Letter" for free. Read it or download it to your device. Learn how to write a proof of income letter with our stepbystep guide and use our fillintheblanks template as an example.