FSSH has its own system for any official letters (e.g. Task force letter from FSSH).
So, you may not get any appointment letter from your email but the letter will be uploaded in the system. You need to download the letters and upload it in the TESDCP system (which is managed by UTM, not FSSH).
Where? The system is known as Talent Management System.
User name is your staff number and the password is your I/C number. Please make sure you change the password which is predetermined for better security.