The Custom Forms Sage Tape Seal Payslip Mailers are easy to use - simply print off payroll data from Sage on to each payslip, peel off the protective strip from the self-adhesive edges, fold in half and seal securely. It creates a self-contained Royal Mail Letter size envelope with a window for the employee's name and address - just add a stamp and it's ready to post. Thick 100 gsm paper ensures confidential data is kept protected