The ability to send an email before a password is due to be changed was added in 2.5.917. This version adds two options to the Password Change Profile; a Pre-Change Email via "Send email x days before the scheduled change to ...." and Post-Change email via "Send Email after successful change to:".
Further detail can be seen via the blue Help Bubbles by these options. Full details are in the TPAM 2.5.917 Administration Guide, Chapter 8 Password Profiles, documentation is available here
In versions prior to 2.5.917, this ability did not exist. Utilizing a Manually Managed Password may provide further options, depending on the specific requirements.