Salary Advice,Confidential Envelope a. Genuine MFR b. Premium quality, Great price. c. Fluent English speaker. Salary Advice,Confidential Envelope. With the application of moisture gluing on 3 sides and adhesive tape on the back side, a pocket is formed and insertion of contents are made possible. With respect to the handling of other confidential documents like salary payroll advice,we present security envelope to serve this purpose. Applications: Academic reports Salary advice Pay slip Login password Personal Identification Number (PIN)