I certify that the following person(s) personally appeared before me this day, each acknowledging to me that he or she signed the foregoing document:. Third Party Confirmation Letter.Basic confirmation letters written to confirm the details of a meeting, event, or other arrangements are typically brief and to the point. Sample Letter: -CONFIRMATION OF EMPLOYMENT-. A taxpayer receives this notice because the taxpayer requested an Installment Payment Agreement, also known as a payment plan. I,. , a Notary Public for said County and. 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. 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. What are acceptable methods of contacting employers? Submitting an application, resume, letter of interest, etc.